I just finished converting my 2001 Fatboy to a Mystery Designs IRS trike. It turned out perfect except for a low speed wobble that doesn't go away. I changed the stock 16x3.5 front wheel to a 18x3.5 RC Compontant wheel and a low profile Avon tire that seems to fit perfectly. Except, now that I think about it, the new wheel is almost 1/2" narrower than the stock and i used the same spacers, not even sure if I have the most chamfered end facing away from the wheel on both sides, or even if that would make much of a defferance. What do you all think or know what could be the problem? I have a 7 degree steering head that makes it easier to steer and eliminate high speed wobble but there has to be something else that i may have overlooked. Any help is greatly apperciated. I'll try to attach a picture or two.