hey guys i have a ss865 and i noticed xs only makes the ss900 now is it thesame sleeves and cylinder with bigger piston starting size ?? atm my start size on my cylinder is 88mm and i bnoticed the ss900 starts at 90mm can i fit 90mm in my 865 or do i have toreplace sleeves >? i tried emailing xream numerous times but i get no responce !! can some please help me thanks