I have a 2016 fx20 with a turbo fxp 26. I bought an identical spare that is running 4 to 5 mph slower and less bow lift. My prop was fixed by croxton and i purchased the spare that was also fixed by croxton. Is that normal ? Also my engine runs 3 degrees hotter with the new prop. Went from 144 to 147. I thought they would run the same ?