Living room slide problem
Went to put out living room slide & it only went half way & stopped. Tried again & nothing. Engine was running, emergency brake on & batteries showed a charge of 13.689V. Tried putting out bedroom slide & that went out with no problem, but a bit slow! Went & tried the living room slide again & it went out the rest of the way????? IWe were hooked up to AC for the night & I thought maybe the batteries needed charging. Left the MH plugged into AC, started the engine & hit the switch to put the living room slide in & again it stopped half way. I then put the bedroom slide in with no problem. Went back to the living room slide & it went in the rest of the way. So, for the rest of the trip we will leave the living room slide in until we reach our final destination. The living room slide is clear & there is no binding anywhere! The batteries are seven years old & I'm thinking they have lost there power & the living room slide is just to heavy (has three compartments that slide out)! I think I need new batteries!
Any info or input would be appreciated.