I'll make you and your pro shop folks mad here...
First off, you not telling them or asking for a certain drill was wrong. How do they know what you want ? unless you've been going to them for a good while.
Second, any shop that doesn't as how a bowler wants the ball to react or if there's a special drill they want/are looking for IMO is wrong.
JMO.
I have a customer that I've drilled 30-35 balls for but I STILL ask if he's looking or wanting something different on this ball. As it is, he has 3 or 4 drills he likes and only wants one of them on any new ball he gets. ( No Mercy excluded ) I still ask, will ask and he knows why. I can not read the mind of everyone who walks into the shop. I probably should but can't, remember how each one likes his or her equipment. Yes, I have drill sheets on every ball I drill but that doesn't matter if he or she wants something different, I would not know unless I ask, that's why I ask everyone who comes in.
So, to a point, you both are at fault, IMO.
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az guy aka: R & L Bowlers Pro
rlbowlerspro@cox.net
www.rlbowlerspro.com