I have a new to me 850d Gator with the Yanmar diesel and being the compulsive tweeker that I am I want to 'adjust' the fuel delivery. I need to know how to get the tamper proof cap off the adjustment bolt. It is a heavy walled pipe with a rubber insert that is gripping things really tight. I can turn it but getting it to come off is impossible with out getting really aggressive. Does anyone have any ideas or have done this that can give me some help.:thumbsup: