First time poster; so please pardon if I post in wrong forum.
I built fixed gear based or steel road frame from 80's (obscure brand Diamant from Belgium, but very nice steel with campy horizontal dropouts and Cinelly BB shell). The distance between droupouts 130mm. I bought a set of Vuelta Zerolite wheels for this project; with rear SS/FG flipflop wheel. The cog is 120mm. I am running it as a fixed gear. The crank is Sugino with single chainring. The problem I am having is that there is about 4-5 mm offset in chainline between the cog and chainring, with cog side being closer to the centerline than chainring side. I have bottom bracket with 107mm spindle. The chainring is bolted on inside of crank arm, and there is only 3mm clearence between it ands chainstay, so I can't bring it any closer to the centerline I guess. I really would not care about this, but at high speeds I hear what appears to be the chain rattle, as if is was multispeed bike with lousy shifting. So I don't know where to from this point. Sould I get longer hub that would yeld longer offset? I tried to offset entire wheel with offsets (I have several 10x1mm washers in place to accomodate 120mm axle) but than the tire comes in contact with upper part of chainstay. Thanks in advance for your help!
P.S. Not sure if this is related to chainline, but at sudden acceleration, or when backpedalling to brake; pedals have free movement before they "engage", just as if something was loose. The lockring appears to be tight.