[folivier]

Oscar is right on about the L bracket. On my '98 with HWH slides it was out of adjustment and would occasionally slide under the slot which actually made it worse since the slot was pushing the L bracket down. If you watch your slide when you are extending it a couple inches before it stops it will lift up slightly showing that the L bracket is engaged. If not then run it back it again and extend it again. Tom and I tried to adjust it with no success but a trip to Newell and they had it done. But once I understood I would watch it while extending the slide. It seemed to only miss when the coach was on an unlevel surface, why? I don't know.