Manual Transmission - t56 woes

Hey, my tranny was grinding into 4th. SO I always timed it, and then I came home and visited my parents. I took out my dad's bike for a spin, and while I was gone he drove the car. He swears it shifted fine, but when I got in it, I noticed as soon as I shifted into 4th, it did NOT want to shift out. Or into any other gear after I weasled it out of there. I tried skipping 4th, but third seems to do the same. I don't have the $$$ for a shop to check it out, trying to figure this one. It seems like syncronizer struts are f'ed up.....
:barf:
I had upgraded the shift fork 3-4 last year........

99SS M6
ORY
LID
MAF
TB
C/O
100 lbs. lighter

Also, I am thinking about a FIDANZA aluminum flywheel. Launch inertia is NOT a concern...... Any feedback? is it worth 300?

If it's really all gears then it's probably a clutch/hydraulic issue. If it's just 3/4 it could be busted slider keys on the 3/4 slider. Try shifting it 1/2/5 or even wind it up in 1st and go to 5th to see if you're getting smoth shifts.

How many miles on the clutch, and how do you drive it? (Daily driver, lots of track etc) First thing I would do is try and bleed the clutch and flush the system. What's the condition of the clutch fluid?

As for the fidanza, I love mine. All that stuff you hear about launching problems aren't an issue anyway, and the quick revs make city and freeway driving way more fun. Plus if you tend to go through clutches from beating on the car, once you get one no more resurfacing at a machine shop and shimming and stuff. Just get new inserts and you're "like new".

It's definitely not a clutch/hydraulic issue. 1st to 2nd to 5th to 6th is completely smooth. 1st to 5th, and 1st to 6th. Does sound like a slider key set. I have never replaced one myself. Have you, or do you know what mess I'm getting into? I have rebuilt a t5 before, but never a t56........

If you've got some mechanical ability and some time it's not really all that difficult. Bad part is having the tools. Besides the usual stuff you'll need some good heavy snap ring pliers, gear pullers, and some method of pressing the gears back on. A budy with a shop press, or a pipe and a hammer if you wanna go the not so safe but cheap way. If you've done a T5 I'm sure you'd be fine. Talk to the guys at t56rebuilds.com for the parts, and consider the upgraded steel 3/4 shift fork and check out harbor freight for tools.