Ok, have some ideas this, and I'm assuming you are using the original bases still. First off for the odd shaped Vee bases, the solution is to measure EVERYthing from center dot to center dot. Then for the only arc that matters in Alpha, you need to determine the back "flat" for the divide between front and rear arc. Also, depending on area you've got to play with, maybe multiply ranges, including Melee reach, by 1.5 to 2.