[B and C]

We have had a reoccurring problem with the PS salon slide.  After changing the extend and retract solenoids, the slide appeared to work correctly.  It was at the RV shop waiting on the generator install and the slide was in as designed.  I picked up the coach on Thursday to return it to storage and the slide was in correctly.  When I returned on Saturday the slide had crept out 2-3 inches.  I then extended the slide out and retracted it back in.  The slide immediately crept out about 4 inches and stopped.  Could the solenoid have failed this soon or could there be a leak in the slide mechanism somewhere that is not obvious?  I have not seen any fluid on the floor when the slide is extended.  Any suggestions would be greatly appreciated.
Thank you!!