2007 Ford Focus SE - Tansmission problems

Can anyone help before I break down and take it to a TRANNY SHOP or SIMILIAR.

I have a 2007 FORD FOCUS with 35,000 mile on it with an Automatic transmission 2.0. NO WARRANTY

While driving the vehicle and I have babied this vehicle It would do the following

1. **** or jump from second to third
2. Kick into nuetral while in second or third gear. Slip into neutral
3. O/D light on dash would flash on and off

I have done the following minor things to see if this solves the problem

1. Got a Code PO 772 Shift Solenoid Stuck on "E"
2. Replaced the solenoid
3. Replaced the tranny fluid and filter MERCON V

While I had the Tranny pan off I discovered
1. silver (teaspoon full) fine metal shavings on the magnet

After I changed the fluid and filter I toke it for a test drive and went well for the 1st ten miles and it went right back to the same slipping,jerking symtoms.

With the information i gave you above

1. Is the tranny fixable or trashed
2. Could it be electrical from the main computer - Sensor, MAP, or etc...

I have done alot of research from websites on this FORD FOCUS tranny and am leaning towards a used tranny from a junk yard with 8,000 miles on it. This is 1/3 of the price as it would cost to rebuild mine.


After looking under the vehichle it seems this would be the easiest to put a used one in. What is your feeling ? Advice appreciated

Thanks Rob