Loss of mph 2023 222x

[toddgray519]

I did my 10 hours service about 1 month ago lately I can only get 43 mph calm day full tank only me on board can someone give me some suggestions what I can do
I use to top out at 48 49


wash dc area Boat is kept in water and taken out monthly to wash the bottom

 

[Cobra Jet Steering LLC]

temperatures slow down the boat as they rise so no big issue Also growth inside the intake can also slow you down

 

[toddgray519]

Thanks