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Your a frickin animal, the speed you did that is amazing. Nice job.

I agree, not even a month later and ready to ride. Nice work.

Looks a lot better than when you first bought it!!

Do you sleep?

If you have the time and / or are retired . Anything is possible.
Lets all stand by for his next project
Dave

Well done, and done quick!

Good Ridin'
slmjim & Z1BEBE

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the ugly duckling became a swan !

Beautiful bike

I can see the air screw from the back side of 73 carbs (no brass jet blocking view)
I cannot see the air screw from the back side of 75 carbs, there is a brass jet blocking the view.
Is this normal ?

#1 plug is black with 73 carbs (cleaned twice and replaced plunger).

Do you have any pics? I am a little confused about your description

There is a brass idle air jet at the mouth of the venturi on the later VM28's circa late '74Z1 and all '75 Z1, the ones with the small drain screw. The brass jet is just upstream of the idle mix screw. The orifice of the brass jet is fairly large, guessing .035 or so if calibrated eyeball isn't failing. Should be able to see a tiny portion of the tapered end of the idle mix screw using good light & maybe some magnification.

The earlier earlier VM28's circa '72 through late '74 Z1, the ones with the large drain plug, have no brass idle air jet.

Note that Mama Kaw/Mikuni changed the taper of the idle air screw concurrent with the myriad of other changes made to the late-74/all '75 VM28's.

Good Ridin'
slmjim & Z1BEBE

This is a 73 carb, you can see the air screw.