is it okay to have some tight fit tubs?

So I built my rack and the top shelf lets the tub slide easily. The second shelf however does slide easy but I do push slightly to get it over the heat tape. Will this ruin the heat tape?

I'd use some aluminum HVAC tape to create a little lip for it to slide over to make sure it doesn't eventually roll the edge of the heat tape up.

what you mean? tape the edges? i did that so am i good?