Anything and everything GT6.

Anyone know how to get the lower screw off the D type overdrive solenoid?? I've been trying for ages with no joy. I have put power to the solenoid and the piston doesn't move so I think it has to be the solenoid.

Why are all the nuts and bolts on these cars so hard to get at?? Nightmare!!

Whilst I am on which is the best workshop manual for the GT6..Haynes are usually ok but is there one better?

Thanks
Jonathan the gt6 novice!!!!