Super Rocket Concentric Carb

[MJM_58SR]

Hello
Is anyone using a concentric carb on their super rocket and could let me know what jetting they are using please?
I'm using a premier 930 with a 320 main, 107 needle and 25 pilot but it's not running very well and is lean.
Bikes had a full rebuild.
Thanks

[Spaceman]

I would normally advise starting with the same settings as the original carb, a Monobloc 389 in this case. However, I notice from the AMAL web site that, for A10SR's, it gives the Monobloc as a 389/46 for 1962/63 and a 389/94 from 1963 onwards. However, looking up these carb numbers gives the 389/46 as being for a 1960-63 A10SR but the 389/94 is listed for a 1963 A10RGS.

The important thing to note about these two carbs is that the 389/46 came with a 420 main jet whereas the 389/94 came with a 310 main jet. If your A10SR originally came with a 389/46 carb, a good starting point with the 950 Concentric would be a 420 main jet. If this all stacks up, it would imply you are running with a very small main jet which could explain your lean running??

[MJM_58SR]

The bike had a concentric when I got it and I just replaced with a new one (probably should have looked into it further) I only ride the bike a couple of times before I stripped and restored it but I replicated the jetting. I've since replaced a 106 with a 107 needle jet and lifted the needle. That was in the advice of Hitchcocks.

[MJM_58SR]

To update
I stripped the carb and checked for blockages, found that the pilot circuit was intermittently blocking when I shook or tapped the carb, spent a while cleaning through with various sizes of wire and flushed through with carb cleaner, blew out and I think I caught something fly out in the corner of my eye. I've since read that there are lots of reports of blockages on new Amal carbs.
All back together and set up, starts, runs and idles well now.