Dometic RM2652 not cooling

As a last resort I did the burping thing even though Doug pooh-pooed it(I have come to value Dougs opinion) since, There was nothing left to do and I really didn't want to put a thousand bucks into a seventeen year old trailer. I also bought a new baffle on a whim and it did fit the flue tighter than the old one but after burping and installing the baffle and running it on gas for about 14 hours, the fridge section was only about 10 degrees colder than ambient. So I'm outta ideas, so here's where I'm at now....
https://www.rv.net/forum/index.cfm/fuseaction/thread/tid/29836674.cfm