Tunnel ram or no tunnel ram...

Just a thought, can the 3rd circuit be killed on those metering blocks (or main body’s) without affecting the operation of the normal 2 circuits? They can easily be tapped to make adjustable.
That would save me some cash but 8/32” tap is unobtainable where I am, these brass plugs also. This is unc thread or unf?
I regret not getting new carbs from APD or TMC at this point. After asking around 4 custom built blocks will cost me 600, with shipping and customs 1000+
I’m thinking to put the dominator back on and leaving this for now.

I’m tempted to configure my own blocks but I don’t want to screw anything up and end up paying even more.

I need a beer.