pic for reference:





Unfortunately, that spacer is a sleeve and spacer combo that rides on the mainshaft with needle bearings between it and the gears (inside of them). Besides, even if I were to spacer the 4th gear up on the mainshaft - that would present a problem because the teeth on the bottom of 4th have to mesh with the syncro and sleeve set...

No, it appears that either ATS requires a different sleeve on spacer for 4th and 5th gear - OR just that 4th gear on the countershaft is very wrong somehow.....

I have emailed Yasu @ ATS/ ACROSS and await his reply.....


Here's what he says:


That gap is I think normal.
The old 4th had a slightly different dimension. The gap between 4th
and 5th was 4.2mm for the old model and the gap for the current ones
is 1.2mm.You can run them, but as I mentioned the old 4th is not strong enough.
I would suggest to purchase a new 4th which is reinforced with temper
shot and which is slightly different dimension.

Best regards,
Yasu