That reminds me .......somebody, a long time ago, can't recall who (Tom4Bren maybe?), completely cut off the vertical forward rubber part of the track (that fits into the metal channel I widened), and replaced it with OEM track felt or weatherstripping FELT type material. I can't recall all the details of how it was attached...have to try to dig up that thread. I believe it was for that exact same reason, less friction, no lubrication needed. IIRC it worked and worked well!