Every time I row, I get a build up of black stuff on the rollers. I have to wipe the rollers after every time I row otherwise I can feel the stuff bouncing around when the rollers go up and down the monorail. I use glass cleaner and a microfiber cloth and the monorail is sparkling clean, yet the build up still happens and I'm not quite sure where it is coming from.
Anyone else have this issue and have any ideas on what I can do to make this better?
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Thanks,
Ash