Brian...been gone and hope you got your answers in the meantime..Just in
case...
Your 3/4 slider hub has likely cracked and the trans is trying to go into
a gear prematurely due to the internal misalignments of the hub...You
need a rebuild my man...sorry.  Its not a linkage problem...
Call or email me for prices if you need my assistance (or just to answer
questions)

Daryl of AA Transaxle
Duvall, WA. (Seattle area)
(425) 788-4070
1-877-377-0773 (toll free)
aatransaxle.com (web site)

Date:    Sat, 21 Jun 2003 11:18:13 -0700
From:    bbutler <bbutler@PRODIGY.NET>
Subject: shifting probs. into 3rd & 4th pls help

I've got a manual trans on a syncro.
Shifting from 2nd to 3rd as well as from 3rd to 4th there is some =
grinding with the clutch fully depressed while driving.=20
An interesting symptom is when I am parked in neutral (with engine =
running) and I feather the shift lever towards 3rd or 4th gear, the =
grinding happens without touching the clutch pedal.=20
Pushing the lever towards 1st and 2nd there is resistance until the =
clutch pedal is depressed then it easily goes into gear, as used to be =
the case when the lever was pushed in the direction of 3rd and 4th. Now =
there is the grinding.