I went to a 14.5x14.25 from the 13.7x17 and the difference in hole shot is significant.
Dropping the pitch 1" will help a little, but not huge I'd imagine.
'06 X2 MCX
"I understand why some people may not want to do this the way I have recommended but I can't understand the death grip some people have on a toilet plunger with a hose fitting." -JimN