Flames are extremely uneven and high

There are adjustments on those burners. The flame should be mostly blue. I would not recommend that you perform the adjustments yourself.

You need a Gas tech/plumber there urgently!!!!
If the gas jets in your oven had not been changed to accomodate LP gas then the orifice on your existing jets are still to large in diameter. In other words your using Natural Gas jets ( lower pressure jets) for Lp which has a much higher pressure than Nat. gas, this can be extremely dangerous, & could cause major problems.
Again I strongly suggest you contact a Gas tech/Plumber & do not use your oven until it has beeen checked by a professional.Good luck

call in a gas fitter as the jets for the propane are probably incorrect.
the jets for lpg and nat gas are different in size and they may not have needed changing at all

Did it work OK in that location before the changes?
Sounds like you used Natural gas parts instead of LP.
Lp orifices have smaller holes than Nat.

Hi! melisrus
If you are using LP, even if you change the regulator settings from Natural Gas to LP Gas, the orifices all need to be changed. The Orifices should have come with the new unit, if not contact Hotpoint.
www.hotpoint.com
Make sure you order the instruruction manual and this is an Oven with Range Top, you will need orifices for all the burners on the range top.
InMrFixIt

I'm not sure what you mean by a proper efficient flame. I just recently went through an experience I'll relate to you here. I purchased a GE Profile dual fuel range. I can get more specific if you'd like but here's the point. The highest burner on the range was rated at 17000 BTU's. A friend recommended the range to me and sang it's praises. I took delivery of my new toy and couldn't wait to get a pot on the stove to start cooking a long wait for pasta. Twenty minutes later I was finally seeing bubbles! I spilled the water out and measured 12 cups of water into the pasta pot at room temperature. That's three quarts of water. 20 minutes to see bubbles and never would it come to the expected "rolling boil". My experience has always been with electric ranges and I am new to gas but 20 minutes? Something had to be wrong, right? Wrong! Much research later I've found it is common for natural gas to LP conversion stoves to lose a good deal of their oumph when converted. GE as it turns out is one of the most notorious for a serious degredation in BTU output. After exploring GE's site I found that this same stove running under LP gas is rated(for the highest burner) at 11000 BTU's! No wonder I couldn't boil water! Back to the store it went and I am still in search of a stove that will meet my needs. Don't know if this will help you or if this is the same issue you are dealing with but maybe just maybe. Good luck!

the flame should be app 2" from each side of the burner. be very careful with lp conversions.

You can purchase a 2 burner cartridge. However, the problem I'm having with that is the gas is too high and is unable to cook anything on low.

Did you change the orifice in the regulator? The orifice opening for LP is a different diameter than the opening for Natural Gas. If you've already attempted changing the settings from Natural to LP, you may want to double check the orifice under the regulator cap, or...you may have a regulator problem. You will need to turn the gas off prior to attempting this. The regulator will be located in the back of the oven somewhere near where the gas line connects to the stove. There is a gas orifice that needs to be turned over to change gas settings. "LP" should be present if it is set correctly. Let me know if this helps.

Most of the time when I come out for a service call with this problem, it is usually because the burner cap is not seated properly on the base. Look at the burner and make sure there are no uneven gaps. Most of the time you will have to rotate the burner cap till a notch or pin "seats" into place. Most burner caps just sit on the bases, and so they get knocked off or moved when the cooktop is cleaned or installed. Hope this helps!