AFM experts: basic problem, getting the black cap off.

I'd like to investigate the mild hesitation that has just started with my
Westy, including peeking into the AFM to check the tracking surface and
maybe make the capacitor fix while I'm in there.  But even the slightest
pressure with a pry tool at any point around the lip of the black cap makes
it turn light grey-brown, indicating that it's very brittle and ready to
snap (instant plastic-fatigue).  I *am* being very gentle, and have tried at
various points around the perimeter, as the recent email and archives
indicate.

Any recommendations?  And, has anyone totally blown it and deformed the cap
to the point where they had to replace it (and with what)?

Thanks,
Nervous Air Fool Meter

Chris Radcliffe
chris_radcliffe@mindspring.com
'90 Westy Auto "Blue Whale"