I have used JB Weld on many Carb main bodies over the years.
You really do not need the power valve cavity to even be there.
Just seal that cavity up and post up the secondary jetting numbers you have in the secondary metering block.
If they are the right size for a carb without a power valve (Power valve block) the you are good to go. Normally w/o the power valve go up 6 jet sizes.
Tom V.
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"Engineers do stuff for reasons" Tom Vaught
Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward.
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