Craig

Yes it looks correct to me, the red x piece has a large jet in one of the arms, (it's the only one of the three arms that has a lip on the base) and is exposed to air.

I also notice you haven't remove the 'boost bottles' - the orange plastic bottles which sit in the reed rubbers. On my MC21SP road to race bike and also on the TTF3 racer, these are removed and the hole filled with bungs. The boost bottles help with road riding low speed carburation, but are of no use on a race bike. If you remove them and take time to fill the hole you get better air flow.

Cheers

Dan