I fine that it's not always a good idea to try an fix something your self if you don't realy know what you are doing.
You could save your self a lot of greaf if you just took it to eather Camping World or to a R.V. Repair shop.
Some things we can fix then there are things we can not fix.
There was a time that I thought that I knew what I was doing and low and behold a few years down the road it pops up again only this time I had no choise but to take it to a shop to have it fix to the tune $6,200.00. Think about it.
Just a thought.