hello: i have a 2000 carver 450 voyager pilothouse purchased in 2016. volvo tamd74p 480 hp ea. zf 280-1 2.27:1 transmissions can anyone with the same boat tell me what your prop size is. carver tells me this boat left factory in 2000 with 28 x 34 props i purchased the boat from the original owner. the props from the orig owner are 28 x 30.2 (4 inches less pitch.) i talked with the orig. owner and he can not remember and does not know why i am only traveling 15 to 16 knots at 2200 RPM after talking with carver and looking at the boat specs i should be traveling more like 20 knots and carver does agree. my WOT should be 2600 rpm and i am getting 2625 to 2680 both engines. if anyone could give me some feedback it would be great thanks, john