I have a friend who has a CCR Powerlite 98cc 2 cycle, model 38172. It can be a PITA to start sometimes. Cleaned carb, changed plug, running TruFuel. It says to push primer 1 or 2 times, anyone recommend a different number of primer pushes? There is a similar model (38182) that came out with electric start. Can the starter be added to the recoil-only model?