new 34mm carbs

I had new 34mms put on about 4 months ago on the '78 kz650.

The mechanic told me the carbs will shake at certain RPMs. They did, big time. For some reason today the bike stopped all the rattle and shake up front. Out of the blue it runs smooth, quieter and with much more pep. All gone now, it's a whole new bike, the gas mileage noticeably increased, too.. It used to feel like something was really holding it back when it rattled, now it has a lot of pick up and smooth, big difference.

Anyone have thoughts please?I

Check your choke.


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