[Knot On Call]

I have a set of Veem interceptor 4 blades on my 52. Don’t have the size handy but probably close to what you have listed. I can check if you are interested. Vibration is almost non existent and after tuning,  the prop demand / fuel burn numbers stay below Cats recommendation between 1600 and 2000 RPM where after it tracks pretty close to spec. WOT sees about 20 rpm over rated engine speed.  I couldn’t be happier. Between 1750-1850 I am getting about .58 a .6 mpg in fresh water depending on weight and sea state.