Before our league started the fall the lanes were resurfaced. I guess this is common in most bowling centers. While the resurfacing process is going on is it possible for the pin setters in the back to be recalabrated. In the center I bowl in some of the best looking shots are leaving 7-10 splits and other odd splits. I don't complain about the 10 pin anymore.
         I know that's just part of the game. Is there some way the pin setters can be checked for accuracy ? I would rather someone bowl in some banned shoes than the pin setter be off causing splits. Is it just me or has this crossed anyone else mind ?

Carlos,

Is it also possible they got new pins??

I know we had new pins installed in our lanes within the last 2 years and ever since, we've had a lot more 'slightly high' shots seeing 4-9s, 4-7-9s and even 4-7-10s.  

I've never left a pocket 6-7....and since the pins....have left 2 of them....both light hits...but never before.
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I think that a more likely scenario is that, because the lanes have just been resurfaced, the playing area has less frition ( whether due to the smootheness of the surface or added oil to protect the new surface ) and it is causing the ball to have a bit of a different reaction, changing the angle of entry and causing it to " get in behind the headpin" more.

  If a ball finishes very sharply, but just a bit too late, its angle is increased and it causes the pin action to go in a whole new and different way than before.  With less friction, the ball contacts the headpin a bit later and more on the side, causing the headpins angle to be too steep, causing it to fly into the two pin at too big a slice angle, sending the two pin BACK instead of directly into the four pin.  The headpin then goes to the wall and deflects, missing the four pin and the ten pin while the two pin also misses the four pin, or at least knocks it in the wrong direction, which results in the seven pin leave.

 Now, the ten pin can be the result of a couple of different factors.  If the ball doesn't truly "set", it can be deflected too much at the point of entry, which will cause the three pin to have the wrong angle and be driven back instead of into the six pin.  If this happens, the three pin barely grazes the six pin and causes it to go weakly into the gutter, missing the ten pin.

  If the angel of entry is indeed too steep and the ball DOES "set", then you have the three pin beingsent into the six pin at too steep of an angle and it causes the six pin to be driven to the wall and can cause the "ringing" ten pin, but, either way, you are left with a 7-10 split on a ball that didn't look all that bad to the naked eye.

  On a perfect shot, it is said that the ball only hits four of the pins ( the 1-3-5-9 ) and that ALL other pins fall as the result of interactions with these moving pins ( ball hits the 1-3 pocket, sending the 1 into the two, which in turn sends the two into the four and the four into the seven. The ball also send the five into the eight and the three into the six which send the si into the ten ) resulting in a strike.

  Anytime you have round object involved ( the ball vs the circumference of the pins ) you can get strange mixes of interactions though, and it only takes being off by a minute amount to resultin some very odd leaves sometimes.
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Edited on 9/28/2008 10:12 AM

Thank you all for the information on this subject. I will contact the USBC to see if the bowling center I go to is indeed in compliance. I'm grateful that you individuals took the time out to respond to this post. I'm not sure why this post was the Visionary area.