I need help with the 6.5 honda motor i am making some modifications to, what i have bought so far from OldMiniBikes is the super x cam, flat top piston, 0.010 over rod, 18 lb. springs, 8 degree key, all witch i dont have a problem with, my concern is that if i buy the 1.3:1 rocker arm is there going to be and issue with piston hitting the valve with 30% more lift with the new cam 275 lift, i have 0.010 head gasket. has any one have any experience with combination before, any help sure would be appreciated. thanks