So I have a 2019 20 TRX patriot it’s got a 250 pro XS four stroke on it. Last year I switch to all lithiums and I have lost 8-10 mph speed. I have re-distributed all my tackle to the back and even put 150 pounds of sand in the back of it and I’m still not getting the speed I used to before. What kind of mods have Anyone made in similar situation such as getting the prop worked with some more cup or adding transom wedges?