4 Spd slight grinding when shifting.

Adjusted to make linkage tighter...the clutch is defiantly engaging and disengaging properly.
Well releasing properly doesn't just mean it sorta releases; proper releasing meams that it the clutch disc can eventuatlly go to 0 rotation speed with no drag (will spin down by itself) with the engine revved up. Any small amount of drag between the disc and pressure plate or flywheel, or between the trannie input shaft and the pilot bearing/bushing, will keep the input shaft loosely spinning somewhat in sync with engine speed. The synchros then have more work to do to change the speed of the mass of the clutch disc and input shaft to the proper speed for gear mesh.

The above itmes A-E is what this is about: "the disc is trying to remain at engine speed due to A) insufficient plate departure, or B) faulty pressure-plate(usually unequal finger height), or C) faulty disc(usually coming apart) or D) a bent hub, or E) the disc is not sliding on the input gear splines properly." Add a poor/damaged/non-lubricated pilot bearing or bushing can cause this too.