Broiler flame too big, right rear burner has yellow tips. was converted from natural gas to propane

You can turn the supply valve down

Converting a natural gas oven to propane involves four steps. First change the regulator, this typically is done by reversing the cap. It's behind the bottom drawer. Shut the gas off first of course. There are videos on YouTube about this, good idea to watch some of those first. Reversing the cap on the regulator changes the pressure, which is different for natural gas and propane. Second step is to change the orifices in the stovetop burners. There's one orifice for each burner. Yellow flame means the orifices are too big. Natural gas orifices are too big for propane. You can buy the right orifice kit on Amazon. The third and forth steps are to adjust the nozzles for the broiler and oven. They are different. The broiler one is typically inside the oven at the back, upper right for all the ones I've seen. The bake nozzle is behind the drawer by the regulator. Buy a nozzle kit from a reputable supplier, it'll come with detailed instructions and info on correct nozzle size. Stove top burner flame should be blue, maybe just a little yellow at the tip of the flame, but almost completely blue. Broiler and bake flame should be blue also I'm told, but I've not been able to get all the yellow out. However, adjusting the nozzles properly will get the right smell, without the propane or CO smell. The real danger with the yellow flame is CO, carbon monoxide. That's a big deal, not good.

Improper install on conversion or faulty kit

Yes there is a valve nut on the broiler too. on mine the oven nut valve turn 2 1/2 turns for propane conversion. the broiler was 1 1/2 turns inward. you also had to flip a plastic cap under the nut on the regulator