it is a mod, not sure of the differnce between 411m and MMS, there were a few items this weekend relating to pr input errors. pr sensor error or something to that effect. per the mechanic that took the call this weekend. looked at some 411 prints, and can't find any pr sensors on the prints i have. i will probably be out there this week and will check what you guys have indicated. thanks for the input will keep you posted
