T-shirts, good chain adjustment and you
Hi first of all who is "jon"? Well shoot, now that I've got that out of the way, lets get back to the T-shirts.
Obtain a piece of extruded aluminum, and hack-saw it into a strip as wide as the rear sliding motormount on your China-fire engine. This is the cast aluminum block that slides onto the rear motor-mount studs.
Don't we all know how a clean t-shirt looks laid out on the bed? If you "carve" the aluminum chunk to resemble that t-shirt it will not fall out, but will be supported by the studs, that are running thru the motor mount block. Being supported by the "sleeves".
What will it do??? I would guess, that if installed correctly, it would incrementally move your engine forward 1/8 in (or whatever stock you choose) forward with each t-shirt shim.
NOW consider that, if you move the engine 1/8, you take up 1/4 inch chain slack, with me?
Sooo 2 t-shirts equals 1/2 inch slack, and pretty soon you do not need a half-link, which, so many times, prove to be worthless.
I hope this helps, as this form of T-Shirt was my own invention, several years ago.
Mike