Drain the rad and fill it with gripe water... that'll burp it a treatso got fresh oil, two lots, and two filters, flushed first set with some liqui moli engine flush. then changed out the filter, the oil filter, but like a prick i snapped a bolt for the oil filter cap. panicked a bit and spent an hour tapping it with a chisel to unscrew it and once i had enough vice grips did the rest.
i also hooked up fan to battery to run all time, bike still tried to overheat on me. i probably do need to burp properly.