I bought this motor a month ago. First two weeks it started up with a few pulls of the rope and ran like a champ. Once it was warmed up, it would crank on the firstly pull. The weekend after, the pull rope broke. Couldn't put a rope on myself, took to a boat shop. Guy shows me where the top plate looked like it had a spot weld on the top plate and bolt. I guess he gave up on it, so I bought a used one on Ebay. Pull rope spins the flywheel just like before, but I have no spark on either plug using a tester. Had to take the coils off either side of the starter assembly and now no spark. Stator should still be good as it was running before. Do I not have the coils properly grounded? Or is the switch box bad?