I just got one drilled up yesterday.
After reading reviews and threads about the Invasion, I decided to polish up the ball to smooth out the box condition, and get rid of all the deep grooves.
I then hit the ball with a new 4k abralon pad. I did throw the ball this afternoon, and even though the lanes sucked, complete left over's after yesterdays "v-day" couples tourny and league and open bowling. the mid lanes were bone so everything was hooking early.
The ball did perform well, and didnt lose energy. But it does need some oil in the first 35ft ( or more ) of the lane to help it get down the lane.
I'll post up a video of me throwing the ball.
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" Lift Your Skirt Grab Your Balls and Learn How to Bowl "
http://coolluvr4u1976.bowlspace.com/For my vids on youtube - search coolluvr4u1976