I'm going to check the valve clearance and I'm going to check for any leaks in the valves. I'm not going to get a fancy multi angle valve job yet. I doubt if I'll do any porting yet. I would kind of like to see what they do more than less out of the box. Then I can tell what any work I did to them was worth. I don't think I would void any kind of warranty if I just pulled them apart check them and put them back together. I reckon if they can hold up in their stock forum I'd feel better about putting more money into them....