Intex Excursion 5 is an inflatable boat with an Intex trolling motor model 68631 a/k/a bm4212. The original prop is a little chipped after years of use. Saw many props on Amazon, bought a Motorguide Katana, it was advertised to fit a 3.5" hub, which Intex has. Didn't fit, the hole is a bit...