I have the 445 running, but decided to go back and check pre-load (just a precaution), then play with timing and idle settings. Initial timing was last set at 3,500 feet, now at sea level (well, 8 ft above sea level). Initial was around 18, so pushed up and got a happier engine until around 24-25 degrees (as predicted by Drew and a few others on another thread), but at 25 total shows 45 (with a timing light and someone on the throttle looking at the tach).
Going to dial back mechanical advance, question is - what is wise for total timing?