Don't know if you've been able to get your slide fixed but sure hope so. We had a 2013 Itasca Meridian and had the front passenger slide fail three times (Lippert/swintek). We already had the 500/1 ratio motors put in and new tracks but unfortunately it was not a permanent fix.
The last failure caused the slide to drop as it was coming in, so after much soul searching we decided go trade the coach. We really liked everything about the coach-great layout, however we were just concerned it would fail again while we were far from home, etc.
Best of luck with yours-sure hope all turns out well!