Ok, so 9.0.1 will be ok! Still gonna see it I can get a bit machined off the top an run a thinner gasket,an aim for 8.5,1 but if not at least I kno I can carry on with what I've got! How easy is MS to map yourself? Ive never done anythin like that before but I'm willin to ave a go an learn as I go, If its easy enough for a DIY'er!