Honda-SOHC

Sorry about this, I’ve gone through various posts and can’t find any answers.
I’ve got 022A carbs on my CB550K0
I’ve stripped them cleaned and replaced the O rings but not jets, just cleaned those. They’re stock 100 and 38
I’ve replaced a dodgy rubber which was leaking
I’ve had gauges to set the vacuum
I’ve static and strobed the timing
I’ve ditched the pod filters and got a used airbox, filter is dirty though
I’ve got it to run but it runs very rich, the air screws are out about 3 1/2 turns!!
Nothing seems to make a jot of difference. Needles have been up and down, currently in the middle.
I’ve read there are fine holes in the carb body which block, I did blat carb cleaner down the ones I could see. Had this problem on another bike which took 3 goes to get them cleared finally using a guitar string.
So any suggestions and how do I get the bloody carbs off now it’s connected to the air box??
Ppl