Hose, son of Sawbones,
You are posting this question here, to us, instead of THE SOURCE, and why?
Yes, negative finger pitch will help, but the real problem is
FWIW, I have had the same - swollen, inflamed tendons. Bad sign - need rest or cortisone shot; then negative pitches will help plus occassional advil/ibuprofen.
Oh, and too short a span is as bad as too long. Make sure that span is re-measured, as with age our bone/muscle/tendon/ligament structure(s) tend to change.
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"When we choose an action,
we also choose the consequences of that action.