Norcold frig issue

[goatherder]

Have a 2018 Jayco Eagle w/ a Norcold frig that we are struggling to get to work on LP. Had circuit/control board replaced by factory authorized shop as it was defective. Frequently camp at altitudes above 7500 feet, was told by factory that was the issue. We had a 2016 Jayco bumper pull w/ same model frig that worked fine. Have camped at altitude for decades with various models/manufacturers and never experienced this. Frig cools fine if lit manually but won't consistently lite automatically. Any similar issues or thoughts

[wingnut60]

Might have oil residue in lines causing restriction in line to gas control, tho if it lights manually, sounds more like an igniter problem. Maybe the spark isn't strong enough--is the gap correct?

[goatherder]

Thanks wingnut. After checking with 2 HVAC shops appears we might have some kind of flow restriction. We are trying to determine the best way to clean the line