this was my first league nite with the 607A - I just got it last wed. i had it drilled 4 1/2  x  4 1/2   pin is over ring  the thumb is 1 1/2" to the left of the mb. i left the cover oob. so far i love the re-action i get. i stood at about 20 and played out to around 5-6. THE BALL WILL COME BACK!! when the ball started to jump i would just move more left. i believe this is one of the best reacting balls ive had in a while. it gets into a nice smooth roll after it makes its left turn.this is defenintly a ball that works for you,just let it roll, the ball will do the rest. it also has very good hitting power and continuation. i am very impressed with this ball so far. if this is the kind of balls that TRACK is making, then it wont be the last TRACK ball i will get.
I AM VERY IMPRESSED WITH THIS BALL !!
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