Took about a 230 mile ride today to Tucson to play golf with some friends, i noticed at highet rpms ( not sure of the exact rpms as i have no tach) i get a vibration, its definitly from the engine, not extremly bad just a little annoying. May just be the lack of rubber mounts, does it sound normal? Also, before i left the house i checked the oil level and the cap had what looked like water in the oil mix, the oil itself is clean as a whistle. May just be condensation????