Model TB-65ss straight shaft Trimmer First time i come across a trimmer that has two springs on the starter pulley. Unit seems to not fully rotate engine when pulling on the starter rope. I took engine off and noticed that on the starter pulley there are two springs. The dog ears on the flywheel seem to be working properly, the only problem is when pulling the rope it pulls but the engine will only turn very little if any. I can spin the flywheel so this means the engine is not locked. It has good compression when turning it. This unit is probably two years old at the most. Does this type of brand have a tendency to have a defect in the pulling mechanizm ? Any ideas ? Please Respond. Thanks.