You don't say what OTA you're using, but the vixen dovetail and saddle will be fine for smaller telescopes such as 80-100mm refractors or a 6- or 7-inch Mak. I've had an 8-inch Mak mounted on an EQ6 with vixen dovetail and had no issues.
I used to have my ED80 on a Losmandy dovetail when I had a dual-saddle NEQ6, but for my current AZEQ5-GT, I switched it back to a vixen dovetail since it wasn't worth upgrading the default saddle.
I wouldn't worry about the marks on the dovetail.
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