... who had built a TL1000-engined Duc 916? And posted a build thread with many pics on the old forum? Anybody has some pics of that bike by any chance?
changed the brake lever recently? Symptoms sound like a blocked return hole in the master cilinder. Riding = fluid warming up = expanding = more brake pressure, also when you don't need it.
check out a site like http://www.jtsprockets.com/catalogue and find out which front sprockets fit which bikes. A lot of Kawasakis for example use the same splines.
at 50 pounds it's a f*cking expensive mod. Remove the ignition pick-up ground plate, slot the mounting holes, done. One mm on the edge of the plate corresponds roughly with one degree retard/advance.