when I close the door it hops off the rear track and damages the bottom rear
corner.  I have tried the following to no avail.

verified  wheel is turning in the guide freely and can spin it without force
sanding smooth and painting the rail
replacing the teflon guide
grease the rail heavily

Any clues

Alexander Dallas
Process Water Network Administrator
Lowell, Ma
PHONE 1 800 875 7873 option 4 X7290
DIRECT 978 614 7290
FAX 978 970 2543
dallasav@usfilter.com
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