Okey! I think this will help me. Yes indeed I got that tape included in the length master. I will try your suggestions with the wrap. Thanks.
It's just regular gaskets you can buy as a package (with multiple diffrent sizes), they are usually used in faucets. I think I bought them for the hose for the inlet water, for my washing machine. But these gaskets makes it harder to turn the wing nuts. I have applied some WD-40 on them. But I think I will need to apply silicone spray on them, to reduce the friction. They protect the lengthmaster from getting marks from the wing nuts. I have the gaskets under the head of the bolts as well.
Here is a picture on the gaskets:
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