I was thinking of running a 10.5 then wind in some timing advance. (that's if I opt for putting brushless gear in). Could also dial out some of the initial punch. Then just see how it goes...
I don't have a slipper to fit, so backing it off isn't an option.
I'll sort a pic out of the belts.. They are MXL, they say so
Car has the front end in bits at the moment, waiting for some different bearings to come
as I'm just fitting a few new bits myself..
The pic reminds me, I need to cut the self tapping screws down on the layshaft bearing holders before I run it, they are not as close to the belts as the pics would make you think though.