sprocket alignment

[mxdad423]

I Have a Kasea Skyhawk 90 that I converted over to hydraulic rear brakes by using Dinli parts I had DC Motorsports make the round housing swing arm to align everything. I have been having a problem chewing up rear sprockets so I figure something is out of line and was wondering if anybody could tell me a way to check to see if the front sprocket and rear sprocket are correctly aligned, I have tried a couple of ways but have not had any luck. If someone could help with this it would be greatly appriciated...

[wvspeedfreak]

I have a steel ruler that I use as a straight edge and lay it edgeways from the front to rear sprocket.We had an Eton that ate rear sprockets like crazy and that was the problem.Evidently the rear motor mounts had been re welded back on and weren't properly aligned.