Had one like that. Replaced pilot assemblies. Went out again. On my third trip out there, busboy propped open back door to take out trash. This door is a good 20 feet away. When he closed the door, pilot popped out. Built a draft sheild for it.
I have also bend t'couple assembly a little to get better flame on t'couple. NEVER try to bend pilot hood. It breaks before it bends even a nanometer.
Good luck, those can be a pain. Hopefully the owner has a little patience and confidence in you.
If the superheat ain't right it ain't charged right.