I bought this Tohatsu 50/35 about a year ago. Ran it all summer without any issues, took it in to have it serviced/winterized and get a clean bill of health. It needed some seals and new impeller. This is my first jet so I don’t really know, is this typical wear, or excessive? It’s a 2015 I think, and I don’t really know what the previous owner did with it other than take pretty good care of it from what I can tell. Should I expect any increase in performance with now tighter tolerances and no more grooves?