I haven't done much riding lately.A couple of times while attempting a cold start though the bike lets out a loud high pitched screech.It always starts but its struggling a bit to spin up on the first cold start,I am going to give the battery a good solid charge as I expect its a bot weak from lack of running.The sound I expect is the sprag.It this symptomatic of work needed on the sprag or just a low battery.The bike is a 3c with all the Jota bits,the battery is a whacking huge Deca and isn't to old and the starter motor was rebuilt not that long ago.Starts hot really easily