I just bought a one year old Suzuki DF25, and when it is ran, it has trouble pushing my 13 foot v-hull to a plane. We dont know what the problem is, possibly a prop with to much pitch, or if the throttle is to slow, we were wondering how to adjust the throttle, or any other ideas to fix the problem. If it helps, the old motor was a 17 yr old suzuki 30 hp. so i'm figuring it lost some of its power due to age, but it pushed it just fine. So, what can i do?