The acute sticking pad problem is a new phenomenon, due to changes in the way the leather is tanned and treated. International environmental and work health/safety standards have necessitated a change in the chemicals used to finish pads, and as a result they stick like the dickens! I have found that Prestini pads are some of the worse offenders, although they are good pads in all other respects. Products like Charlie A's Gig Dust, Crud patches, WD40, Old English polish and the old dollar bill trick, where a bill is gently pulled between the tone hole and closed pad/key can all help to alleviate this condition. However, I too am ever frustrated with these new pads and the sticking hassles they now present, as are most other working saxophonists/collectors. Good luck.