Thanks for your response Backwards
In response to your questions, I do not know her PAP or tilt (I know that sounds bad and I know mine but unfortunately not hers as she lives in a different state though the pro does have it on file)
Same driller and exact same pitches, etc on both balls. Very quality pro shop with a very knowledgeable driller that ended her past issues with clipping holes, that is why she will go only to him.
The trop heat does flare a bit more then the slingshot, but she also throws a high flaring morich mania that did not clip (same driller again, same layout as Slingshot). I have nothing but total respect for the driller and definitely plan on taking it to him, though posted this beforehand for feedback as there are so many knowledgeable people on this site.
I think you are on to something with your weight hole feedback as both the mania and slingshot have a weight hole and the heat does not....
Thanks again!
Gonz