The older BBD's are air metered (like the '71 and older Thermoquads) VS the newer "tin top" solid fuel BBD's. Jet and rods don't swap. Newer BBD's are more adjustable on the travel of the metering rods.

IIRC there is some adjustment on the metering rod tree. That would be the Allen head screw. Notate where you start at so you can return.

What are you running this on?


"The only thing to do for triumph of evil is for good men to do nothing"

"NUNQUAM NON PARATUS!"