1977 850mk3 Pattern Blackcap Silencer Main Jet Size

I currently have peashooters fitted to my 1977 850mk3 with standard twin Amal’s. The silencers are starting to get a bit picky and was considering a change to Blackcaps from A/N. The bike runs sweetly on its current set up and perhaps I’m a bit reluctant to change something that is so well set up just for cosmetic reasons. However I’m still inclined to look at a change. The A/N website states that the blackcaps are not manufactured as per original design and maybe freer flowing, hence…