The quickie engine has the gold anodize head and prop drive.
You should have bought both. The other being stuck means not much if castor fuel has been used.
BTW, that fuel I would recommend. I do not know the composition of SIG fuel. MVVS engines do not like synthetic oil very much.

Why not use MA props? I use them extensively in combat, and find them excellent performers. I also used them on my old ST60 bluehead, and verticals were better than with Graupner airscrews. Much will depend on the plane/engine combo. PPl I gave one to try had to admit they did perform quite well, so...


ps
I have no commercial interest in MA, just can't stand undocumented myth.