I bought a 1995 4x4 extended cab with 124k, It has an issue with reverse if you put it in reverse and let the engine idle it will go back slowly but if you press the gas it seems like its in neutral. Is this the dreaded shell gear problem or could it be another issue? I have only $1000 into the purchase of the truck and would rather not replace the transmission as it shifts through all forward gears extremely well! (and like anyone i just dont want to pay for another transmission!) Is there any chance it is a Shift Solenoid?