What to do with a four year old GMG smoker?

I have had a GMG for four years. I've never had a covered place to store it but I've always covered it with a weatherproof cover. Living in southeast LA, it is always humid. So, my smoker is covered in rust. Every time I use it I have to remove the pellet tube, the auger (to remove the caked pellets), the electrical parts are faulty. In the past GMG has been great with replacing parts since it was still under warranty.

I hardly use it now since I am tired of rebuilding it. What should I do?