Hi, FL! Thanks for your gen regarding the ash-collector. The 'disc' on my old One-Touch now looks like rather a battered old-style hub cap - fiddling with it and the little spring retainers is indeed something of a PITA!
I would imagine people come from far and wide throughout the Principality to gaze in awe at your 22" 'Wbr brbcw' and mutter "Now, there's posh, isn't it?"
Or perhaps they flee in terror, thinking that a UFO has landed at Tudor Towers?
Can't help with the pork crackling from personal experience, but this site
Tips For Perfect Pork Crackling Every Time gives some tips which sound spot on. High indirect heat, scored skin salted prior to cooking is certainly what I'd try.