When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
you will get a little bit of movement, it's normal... too much however is not. I also had the same thought when I moved my impeller... talked with an expert, he showed me a new one which had basiclly the same play in it.