Hey Damon i have a 870..talked to you before...What is the RTD sensor...my unit is cutting out..on low ???My 870 had an RTD sensor go out at about 300 hours. Other than the floats wearing out and a few brass repairs, it's been a solid machine. I'm very happy. I do expect some issues. Anything mechanical will wear out. I take care of my machine. Always checking oil levels and keeping her warm at night Currently at over 2100 hours.