[redmt]

For a quick test, you can drop the trans in reverse and with the clutch still held to the floor pull the tranny out of reverse, wait a few seconds and then try and drop it back in. If it still grinds then there is something definitely dragging. First place I'd look is the adjustment. If you have a NON hydraulic clutch you should be able to feel a bad throw out bearing when lightly touching the pedal. A bad pilot bearing will usually have a bit of vibration to it under a neutral load.