[creeper]

I would take the car out somewhere level and rev to 5k in 1st with the clutch pushed in. If the car moves forward, the clutch is dragging. If the car doesn't lurch, then you know it's more likely something synchro related.

It took me many tries to get all the air out of the system after installing the tick, I would start with a thorough flush of that first even if it is new. What kind of fluid is in the trans?