Mikey,
Good information on the undercamber, did you sand it in under the whole blade or somewhat back from the leading edge?
I understand about the increase pitch at the tips, this is suppose to give a little more line tension and re-acceleration from the corner. I would think that adding in some undercamber out there would do something similar.
Adding the pitch to the tip on a wood prop is very easy, they repitch just like doing an APC prop with a heat gun. The technic is to heat the area were you want to pitch (turning over the prop to heat both sides) let it heat soak a bit then reapply the heat (I use a monokote gun, does not blister the finish). Twist the blade just like it was the APC (they like the heat soak and a little extra twist) hold a couple seconds and check the pitch, adjust as needed. You will get a feel for how much twist and heat after a few tries. I have done this on several brands - RSM, Rev-Up, Top Flite, BBYO, of wood props and they hold the new pitch just like a CF prop, had them sitting in the sun in a hot car for hours never lost pitch setting.
Best, DennisT