That's a pretty short bar on that 372. Are you running an 8 pin on that? I'd bet she'd pull an 8 pin pretty well with a 20" bar (or whatever length that is).
I recall a very reputable saw builder (E_H_P) mentioning that the 75cc XPW has a lot more potential than the 78cc Bailey's BB kit. The main reason behind this observation was that the head volume of the XPW p/c was much smaller so you get much better compression than with the Bailey's BB kit.
That being said, I freshened up an old 365 with a Bailey's BB kit, bumping it up to 78cc, and the saw kicked a$$. Then I saw some racing results from up north and realized that Timberwolf could get even more out of this set up.
So, I sent him my saw. Now, it's about all I can do to hang onto this thing while it sinks a 28" bar through red oak with an 8 pin. It's just crazy!
(full disclosure: I cut firewood with square ground chain.)