granted this is an older post but I just drilled a seed ball, from a friend of mine in the Detroit area, yesterday and got a chance to use it last night...
I have mixed emotions. The layout ended up like 3x4, this drill puts the pin like next to my ring finger, cg is 1" below and 3 1/2" right of grip center. So okay here are my issues, atleast on last nights house shot, 1) the ball had WAY more mid-lane read than I expected for a polished pearl and 2) the overall hook was more than expected but still not enough.
I ran into an issue where I had to keep moving left to find enough oil so it didn't check early but that created a fine line because a little too deep and washout...or something even better.
I know that the pin location is going to speed up the roll, but I didn't expect this much with an RG this high. I am going to try some surfaces and see what I can get. I had a Darkstar that was somewhat the same way and I had to go with 4000 abr x2 and some polish to get it to do what i was looking for.
For anybody who's interested I will update in a week or two when I get a chance to make the change and put some games on.