You got Susquehanna RV in Selinsgrove and Rhones up near Williamsport. Ive used both and Ive had good and bad service from both. If you can grab one of the better service techs at Rhones you might be OK. Im sorry but I dont remember the name of the guy up there who I really liked. I havent been there for atleast 5 years. I would give them a call first and tell them what slide mechanism you have. They both sell a lot of RVs with slide outs so I would assume someone should be familiar with the Happijac system. I bought my AF from Kellys RV in West Milton. They have one service guy and I cant tell you much about him. I never used him/them yet for service.