Model RM6270 as fitted in Coachman 460/2 2001.It wor4ks ok on mains and battery, but gas side of it erratic. It worked fine one day and next you would only get the flame then when releasing the button the flame goes out. I took the burner out and cleaned the thermo' coupler and blew the jet out, reassembled ans hey prest it worked, left for an hour went to relight it and nothing , this time no spark..When they say the gap should be 3mm do they mean the side of the thermo as you cannot get the point off the thermo 3mm friom the igniter. Any ideas chaps.