[vmc4820]

We had this exact problem with our 2004 unit. The danger is the broken blocks will push through and damage the fiberglass on the underside of the slide when taking the slide in or out. Not a hard fix. DRV can send you the repair pieces needed and then you have to "jack" the slide when it is out and begin taking the trim pieces off to replace the white plastic piece and reposition the blocks etc. We replaced the blocks with two longer pieces rather than the 2 small ones that DRV sent to us. The longer blocks provide better support for the weight of the slide.