Hopefully this provides a bit more clarity to my recent issue.
First off, if it is the syncros, how bad a job is this to do (part/tools/effort/time)? and any direction on how to fix, where to get parts, etc. is appreciated. Again, I am fairly inept but I might be able to borrow tools/talent to help me.
The jeep runs fine in first, second and reverse (although I have to go slowly into reverse with low rpms or the stick 'chatters' just a littel a bit like something is spinning against the stick as it wants to go in gear.)
At a stop, i can shift into any gear easily, regardless of RPM's as long as the clutch is in. I also can shift into 4wd (high or low) without any offending noise.
When rolling (~30mph) and running in second, if i try and shift into third, the stick moves easily enough but as I begin to put it into gear (clutch in), the rattling comes in strong, like something not 'moving all the way out of the way' that would allow me to shift into third w/o the chattering. I can go into third but noise suggests it is a very poor idea to leave it in gear! As a result, i don't want to make a problem worse and keep it out of third.
Any help in confirming the diagnosis or fixing the problem is greatly appreciated. The sad part is winter is here and I just got my heater working