Thought I would come back with an update. So we were able to find a mechanic to check out the motorhome. Recommended changing the air filter (again). Explained that we had just done that two weeks earlier but followed his advice and changed it again. Seemed to correct the problem but really seems odd it could need to be changed so soon.
Has been an interesting 5 weeks on the road. Had one slide stop working altogether so now have to override it by using power directly from the battery. Had a pin break on another slide but was able to repair it. Replaced the onboard surge protector with a external one.
Still it has been a great trip, but expensive trip. We have done fine towing the Jeep on the interstate and relatively level ground but the motor home really struggled in higher elevations which was not what I expected with a DP. Often we did well to hold 25 mph when climbing hills out west.
Have several things to get checked out when we get home on Saturday as we continue the motorhome journey.