After reading many posts over the years, I knew this day would finally come. The front passenger seat in my 80 will no longer move forward/backwards. (Actually, it's all the way forward and wont move back. The worm drive on the righht side of the seat seems to be working but the one on the left side is binding and does not appear to be working. Looks like there may be two drive motors and the left side is not working. Anyone been through this before with some tips before I bring out the shop manual and tools?