Regret selling my EB20, will get another or EB77/22

I've found out UK Neil can knock up silencer adaptors, but what else can you do to these ??
I've stumbled on Gmac, spoked to Gordon about 2240s etc, so get a lot of that, but specifically, on Sheridan, who, what etc etc - website links very helpful or pm's of people who can, who will use good tools etc, no bodgers please -

Main reason for getting rid of last one was noise, but if consistency can be improved, trigger, grips - tell me do -