I’ve always worked off the tr/slot not being much more than a small square revealed. Too much tr/slot > activates main circuit > nozzle drip.
This is why some big cammed, performance engines need more by-pass air. Not only to raise the idle, but they can pull enough air through the tr/slot at idle to activate the main circuit, then get nozzle drip.
Anyway, that seems to be ok for now.