May I suggest you don't use alcohol to wipe the ball down between shots. Alcohol can clean some dirt off the ball but it will do nothing to control or remove lane oil, which is the culprit you need to control. A clean micro-fiber towel  is probably better than using alcohol on the towel between shots/frames. If you feel you need to use a cleaner during bowling, try Valentino's Remedy or Zapp-It. They are approved during bowling and will do a better job than alcohol.

 

To truly take care of oil affecting your ball, use a strong cleaner like Hook-It or Lanemasters cleaner after bowling and before putting the balls into your  bags and certainly before leaving the center. Use the strongest cleaner, Clean and Dull, every 9 games or so, when using dull or matte finish balls on heavier oil patterns. If the oil is truly heavy, use it when you get home after every bowling session.

 

Put your balls thru the extraction process every 50 games or earlier if you see a loss in performance or hitting power. 

 

Strong balls, like the VG, will absorb the oil into the coverstock within 15 minutes or so of throwing it. So cleaning the ball after bowling is imperative. Using a stronger absorber like micro-fiber towels between frames will also go a long way towards inhibiting loss of performance. 

 

One other thing, maybe you didn't realize but these new balls need to have their surface refreshed much more often to maintain their performance, too. Bowling will wear down the surface and flatten down the hills and valleys of the sanding lines. This includes super dulls balls like 1000 grit Abralon, super-fine finished balls like 4000 grit Abralon and even the grit level under polished balls. They all need to be refreshed on a regular basis. Otherwise, throw them in the garbage and buy a new ball.