you still have alot of motor left. ive read that timing is a fine tune adjusment. get it with the gearing first then add timing. you want your motor to be around 140-150 on the heat side. so if your at only 100 and need more speed try to go up 2 teeth. run it for 2 mins and check the temp. if its around 100 then you should be good. if its way higher then it was to much change.