Originally Posted by boywonder
The slot in the channel where the front bar slides should have plastic edge trim on both the top and bottom edges of that slot. If you are seeing metal shavings (not good!!) you may be missing some of that plastic edge trim.
Apologies to the OP since this seems to have migrated a little off topic, but could prove helpful to others since it has relevance to maintaining pop-top operation.
; Ever since the first 'cleaning' i did on the channels (and the application of the silicone grease) I haven't had any additional metal material in the tracks.
BUT Your comment has peeked my interest, I'll have to check for the plastic edge trim since I don't recall noticing this in all the years I've been conducting the task. Thanks for contributing this.