sctcrash.... I'm not too technical but... I broke both my mag's second
being a replacement on the bench... I run it rich, but not 2 stroke rich
I used a tech and after starting the engine I peak it then I backed it
down with the needle valve by about 5-600 rpms, I ran the first two
tanks that way and on the third and fourth tanks i started to
intermittently peak and back off with the needle valve... Then I started
flying still running it a bit rich.... It worked for me.. The engine has
never dead sticked, starts easy and has a bunch of power...
I called and replaced the first Mag because I kept breaking the muffler
pipe when I was using the 15x4 prop, the engine turned it well, but the
pipe kept breaking no matter what I did?? So I called and Mag sent me
a free pipe/muffler and said to balance the prop which I was doing and
all else looked good??? Anyway I lost that pipe/muffler also so on the
phone again and Mag(Great Service!!) sent me another engine... But I
had the same problem using the 15X4... So I went to a 14X4 and no
more problems???? If your trying the 15x4 let me know how it goes

Edited... on 1/2 of the second tank I did start peaking the engine and
using a temp gage I watched the head temp.. and let it get a bit hotter
before going back to the rich setting... You do want the ring to seat..
all my adjustments is with the needle valve with the throttle wide open....

CeeGee... I know, I thought I'd get it done while the boss was gone.. But
then the little boss came to watch me:-)... And I have one in the Box to
finish... I'm flring the profile now... But I have been going to the field less
It's just TOO HOT........

Gary... I have to try your way into the K.E. spin....