Ok I'll try and keep this short. I'm doing a 94mm bore, on my 400S, through MT and running RHC cams so I can put in my stroker next year. The problem I have run into is that MT doesn't offer a Compression Ratio high enough to keep the bottom end on the bike with a 94mm kit. The 94mm comes with 12: 1 CR. I need 13 or 13.5: 1 to keep my bottom end for trails and run pump gas for all of the commute?. How can I get a good enough compression with the 94mm bore to keep the bottom end? Should I just go through Lukes and build the kit with individual components, adding the high compression piston? How can I get the higher compression with the smaller bore? The 94.5 and 95.5mm bores come with a 13: 1 CR, but not the 94mm. Nate, Ed, somebody........ HELP!!! Reply to this message or email me at firstname.lastname@example.org or call me at 865-898-3590. Your help would be greatly appriciated in getting this matter ironed out so that I can build my motor.