Desertrat,
No hard feelings mate, I suppose I got a bit defensive there myself, just tired of hearing all the bad rap on YS, especially since much of it (not in your case though) comes from the modelers who are to lazy and/or ignorant to read the instructions that come with the engine. I flew a 6.25 lbs Extase powered by a YS91AC (the one I'm holding here to the left) beforoe the UCD. That's why, when I took one look at the size of the UCD, and knowing it would come in at 8 lbs or so, I just knew that the YS91/Saito100 size power plant wouldn't tickle my fancy he he.
DKjens