Help needed with Norcold N611 Problem

Thank you so much for your help. It was pretty much what the RV Repair place in Poncha Springs, CO told me. They couldn't work my trailer in while I was camping nearby and I couldn't follow the technical details over the telephone. What I took from the phone conversation was that sometimes the spark and the gas were too far apart and had to be adjusted. Now I have something more technical to tell the technician when I take my rig in Thursday. If my local RV Repair can't/won't look into this problem I will just have to schedule an appointment at
Poncha Springs and haul my trailer the 100 plus miles to get it fixed.