Since getting a Red Zone about 6 or 7 weeks ago, it's been the ONLY thing I've thrown.  I don't use plastic or another ball for spares, so the RZ has been the only ball I've had out of the bag for 3 leagues a week (with a couple sub nights thrown in there).  Lately it's been transitioning a little slow, and I had a rough night with it Tuesday.  Decided to give it a rest and pull something out of the closet.  I need to reslug my Radical, so I went with the Smokin.  Thumbhole needed a little beveling (missed a 9 pin cause I couldn't let go . .), but after a rocky start (got there late, only got one practice shot) on Wednesday, I got hot.  Had 15 in a row at one point, but still managed to screw up a 300 for the second week in a row.  Had the front 10 twice in the last two weeks now, last week it was a 6-10, this week it was a greek church, lol.  734 is a nice rebound set, and especially with a ball I hadn't thrown in a good 3 months.  Does anybody else notice that when you use a ball exclusively for a while that it starts to get lazy on you?  I used my Smokin the last half of the summer and most of last year, and it started getting slow on the backend, but now it's back to full strength.  Used my Radical quite a bit when I first got it, and it started getting lazy after a while too.  Probably just need to bleed the oil out of my RZ, but I'll give it a much deserved break for a while.  I'd say that only one sub-600 set in 7 weeks and my first 800 earns it a rest.  Got my ring today too, didn't know they engraved the date AND the exact score inside the band on 800's, that's kinda cool.  Sharp looking ring.
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Overdose, lethal metal level in my blood, it freely flows, embrace the pain, crush the suffering and cleanse it with the river surging through your veins.

Yes, I noticed that too. I guest if you don't used it the for a while then the Oil come out evenly then that makes the ball roll evenly too. Other reason could be the ball you are using now has a weight differences that makes your timing fit perfectly with the other ball. I struggled for fast few 4 weeks I started played just okay then get bad and badder each week then next time I know my average down to 201. But last night I got my swing back timing and ball speed is back. I guest I was looking for a ball to used and practice on it might have corrected my timing. Well, who knows just my theory.