I've been haing a tough time starting my Archer - Factory rebuilt installed in September. Ended up having the primer lines repaired (should have just changed them all with the new engine). Then, had the carburetor adjusted. It was starting fine again, then dificulty again. Turning over fine, but not catching. Then - I noticed that it wanted to start when I let the ignition key go. Now, it starts right up after a few blades as soon as I let the key go. Any ideas?