'If you teach a man to fish'...why don't we teach the OP to use his little screwdriver tuning thingie and then he can keep the saw in tune throughout its service life. Driving all the way to a dealer for a 1/4 turn of the L speed seems silly. I thought sites like this were to help folks avoid silly trips to the dealer. The less one has to rely on a dealer, the better their chain sawing life will be.