I recently picked up an SP-20 and I’m working through maintenance.
The plastic/Delrin rollers don’t touch the bearer rails on either side. They show wear, so they made contact at some point. From what I found on the blog, these were an optional add-on that doesn’t contribute much.
- Is this something I should worry about?
- Is there an adjustment I should make?
- Are replacement Delrin rollers available anywhere?
