I know I've gone way off original topic here, but just thought I would post an update.  I ran it on a stand yesterday and as usual ran great level.  When pointed vertical, the high speed did great with very little leaning.  At 1/2 to 3/4 throttle, it would make it about 10 seconds or so and then immediately lose power.  If I leveled it quickly enough, it would regain rpm.  I'm now thinking further LSN adjustment, or air leak.  I want to connect it back to a throttle servo to have a good solid endpoint to listen to idle and response before adjusting.  I then had an issue with the muffler that I will bring up in a new thread.  I submerged the engine with a fuel line attached to the carb to check for air leaks.  I noticed a very little bubbling around the throttle arm (not through the LSN, but on the outside of the barrel), but quite a bit of leaking around the front bearings.  I know some leaking around the bearings is normal, but not sure at what point it becomes excessive.  Would a new aftermarket front bearing help?