As the title says I've got a 62 c60 ex state highway truck I picked up that had been sitting for years,I've got the 283 running good and the dump bed working,I'm still struggling to get the hydraulic clutch working and expect to find the clutch disc stuck to the flywheel or pressure plate when I finally get the clutch fork to move.The question I have is regarding the transmission it appears to be a spicer 5 speed based on the shift pattern on the knob, and it won't shift into any gear when the engine is shut off, when I run the engine while in neutral the PTO hydraulic pump appears to be working fine since the dump bed goes up.Is this due to the inability to release the clutch or am I looking at a problem with the transmission too?I saw on another forum that the medium duty truck tranny's have a tendency to get extremely hard to shift after they have sat for a long time and will loosen up some after the oil gets circulated. Has anybody else seen this?Any tips on how to get this thing to shift into a gear?