I got the similar problem as well.
It first started 6 months ago when I tucked my pinkie, got the pain at the bottom of my ring finger. stopped doing what I was doing, pain went away.
However, 2 months ago, without tucking my ring finger in, trying to 'turn' the ball like Tommy Jones and PDW, the pain came back. My finger goes sore after a few games, even now......, not good at all.
Still, 2 weeks ago, with the pain I shot 278 for a 671 set, my highest ever!! (I'm not a good bowler, just 170avg) No pain no gain eh???
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Charlie 'I can't stand it' Brown
Homer Simpson is a better bowler than me!
Bowling balls are so much more expansive here in England, U.K.