NDDan
Guest
If you pulled one or the other valve body off from center plate you will want to be aware of a needle that needs to be held in place with grease or the like. Otherwise you may get together and find out you have no forward movement. Vasoline is suggested to hold orings in place for assembly. Don't know what oring you had fail but don't think I would worry about it unless it blows another of the proper replacement orings. Good luck