The best thing to with gears with spacers made on is get them machined off, that way you can use the stock spacers, keeps things simple. I actually used a stationary belt sander to remove the spacers from my Polaris gears, didn't take very long at all!
it was a bottom gear that had a built in spacer on it. i removed the bottom shft spacer. even bottom stock gears have a slight spacer on them the top and bottom gears appeared to have lined up together with just the bottom spacer removed
LMAO... i dont think i want to test that theory. i think ill pick up a yamaha 40 tooth hyvo and try to pawn off that EPI gear. my brother (michigander) picked up his first sled last december.. 01 srx had it for a week and the chain blew in hundreds of pieces destroying hin entire case. he emailed me the pics and the guy he bought it from put the SX style chain in it that was streched out pretty bad. luckily 800 just sent him a new chain case so he can ride the rest of the winter.