Your welcome Dean. I have a lot of mods on mine because I love hoping my bike up. I have done nothing inside the engine yet because it has been fine. If I ever have to go inside it I am sure I will go ape when I do. As for the puking I have NEVER had a problem with that. I know only a very small number have. I have my own ideas why it happens that I won't go into here. I made myself several back rests before I boughtmy Ultimate seat set. I did a mod on my stock seat and cut out a chunk in the seat and installed memory foam which helped. I have no BUTT to speak of so I get monkey butt real quick. A lot of the guys complain about the seat after a half an hour or so in the saddle. Only way you will really know is to ride for a few hours and see. The seat is an easy fix no matter what you decide. The 10 minutes you spend sitting on it doesn't really tell you anything. To me that is the only thing skimped on.