I've just twisted the screw until it sounded "good" but not too fast. But 1300 RPM should be about 20+ put-puts per second and I can't count that fast. Anyone got any good tricks or a good place to buy a removable tach guage with decent refresh? I know about the hardline and lindy tachs but they look like a mid-80's casio calculator wrist watch and I don't necessarily need something that will be on my bike the whole time. Considering the Vapor with dash kit, but hesitant to cut wires on my brand new beautiful piggie. There has to be some Radio Shack tach guage for working on single cyls, right? Thanks in advance!