i just took mine out to clean it and it has several black lines across it that are all paralell and at different spacing?this is when its lying out flat on the ground.why would this be?it was all green when i bought it.
Its not the cage. I change loads of them at work and they have never lined up with the cage lines. Just 1 of those mysteries. Might be oil but unsure. Just change it if your worried for the sake of £20.
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