Quick update; I did have an earlyish call to get suckered into work, but after three hours sleep, somehow babbled my way outta that
Pulled the float out again and split it- was a firey affair- half full of fuel... ended up with 8-10 grms overall ( scales are a bit dodgy).
Resealed the float, still 8-10 grm overall(mainly 8g), and sits nice, but level a bit low unless I leave it and it rises to previous level.(checked for bubbles in a tub of warm water)
Decided the needle was worn, so being Sunday I cheated a bit, and stuck it in the drill and touched up the tip with a points file & emery. I guess next choice is touch up the seat, or just don't leave the fuel turned on.
I thought doing this would make the needle sit further up, so made a 10thou standby packer to solder onto the float/needle interface but haven't needed it yet.