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Long belts rubbing against the pulleys

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Hello Forum

I noticed that the long belts are rubbing against some of the pulleys.

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The rods are not moving back and forth, the pulley are close to the black spacers, no play at all.

For me this does not look very healthy for the belts, albeit the rubbing seems not to be too bad (no grinded belt particles on the bottom nor twisted belts).

If I would put the pulleys in a line with the belt, so the belts wouldn't rub anymore against the pulleys, the rods would move back and forth.

Should I place washer between the black spacers and the pulleys to fix this problem?

Or is it negligible?

And:

Does this effects the print quality?

Thank you very much,

Martin

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