Generally what vehicle is the biggest pain for you to work on? Why?

Chevy CUCVs - there are parts systems in chevys that you have to take apart with a torque wrench because the torque requirement to put it back together is the torque that it broke free plus 5 lbs. So if you took apart the diffs with an impact and then went to look for torque specs to put it back together - there aren't any - ANYWHERE!!

The M1 when we broke track. Each segment weighs like 70 lbs.

I mean, have you ever tried to rotate the tires on a 1943 Midway-Class aircraft carrier? You can't believe the size of that torque wrench!!!