I need to elaborate on my setup:
diff/axles/driveshaft = 1997 miata
tailshaft/gearbox = 1999 miata
bellhousing/clutch fork/thrust bearing/slave cylinder= 1991 rx7
engine = 1991 rx7
My problem is that the car appears in neutral but the engine turns with the driveline. I could row through the gears on the trans when it was on the floor, but after i bolted it to the motor, i couldn't. I figured it was because of the tight clutch. now it's in the car, driveshaft on, clutch is plumbed, and it still does it.
The shifter feels like it's in neutral. it goes left and right and will spring back to the center. if i jerk it around a little or rock the car back and forth, i can get it into each gear (some are easier than others) some feel like they are all the way in gears, some feel like I can only get it halfway. This makes no difference on the locked up driveline.
I took off the reverse switch and rooted around with a screwdriver to see if maybe it was stuck in reverse, but i didn't get anywhere. I wasn't totally sure what I was looking for anyway.