I own a 2009 Sundance 2900 MK and I have had nothing but problems with the jack motors and landing gear units. The first gear motor failed 20 days after purchasing new and was replaced under warrant, 9 months later it failed again and was replaced with a new improved unit. Last month the drivers side landing gear failed and this month the passenger side failed. This is 4 failures in 23 months, is any one else having similiar problems? Heartland and the manufacturer refuse to help with this and state that it must me over extended or retracted. I have owned 3 other fifth wheels and have never had jack problems and this unit only get used 3 time a year,