Should have done a search first on here. :clonk:
There is a tool for this:
There is a tool for this:

Well, I went out again, I thought maybe I should use a couple of more feeler gauge tabs. It worked like a charm!:hurray: It took me all day and yet, it only took me 5 minutes to think about doing it this way and it worked great. I might just invest in one of those tools though. Thanks guys!:thumbsup::beers:I believe that years ago I did it using one of those paper thin feeler gauges. Did one when I was about 19...no manual. I was too dumb to know better than to dig in without a manual and I did NOT take out the counter shaft...just new syncro assemblies but it worked when I put it back in my buddies 68 GTO.