blow out 7-10 usually only happen to me with my v2 pearl(drilled to roll) on desert like conditions, and thus rolls out.....hits the pocket like a wet sack(with plenty of angle) deflects to the right and result in an unhappy bowler and it being put in the bag
usually has symtoms weak hit 10s, then yippy 7-10....and a switch to my v2 particle is needed(doesnt roll out since the cover on it is shot(even though it only has about 30 games on it, as with all v2 particles)
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"Whats behind you is not important!!" -friend(as he throws my rear-view mirror out of my car)