Model E250LHAGF Serial # 5484946. When I mash the foot throttle to plane out, my boat is not taking much throttle at all. It will just sit there nose high for about 5-10 seconds, then take off exactly like I'd expect it to right from the start. I am going to try opening the pvs holes. I'm running a 28 Raker on a 21XRS Bullet. I don't feel like the vents are the fix to this, because it doesn't seem like the motor is bogging at all, but I may be wrong. Boat is running great outside of that. I have tried adjusting my jackplate all over the place(hydraulic), but nothing seems to help at all. When it finally takes, it shoots out of the hole, but until then, it's just kind of sitting there nose high making my holeshot match up with all of the other boats.