When you say replace the entire ignition system, can you specify all the parts you would replace.i got one of those myself, and it runs like a champ. changed ignition switch and checked gear lube on drive system. if i were you, i would replace the entire igniton system. i found it to be very beneficial on the lt 11 i had and the lt 12 i currently have. you might also wanna check the rear end and put some gear lube in it if needed. should just be a black plastic cap on top of the trans op the top left side of the case. the rear tires can some times be a pain in the a** to locate. other than that, its an excellent machine.