The quality of this cover is excellent. The instructions are easy to follow and everything fits just right. Special addendums for spacers and shims work perfectly. I installed this alone and it took about two hours but I could do it in half the time having done it once. The only suggestion I have is to add some teeth to the outside washers at the front to bite into the vinyl when tightening the inside knobs. It was quite awkward to hold the disc with pliers and turn the knobs at the same time.