Carrier engine problem

[Jim Burrill]

Guys, I have been having a problem with Barry Detweiler's carrier for several weeks now. I posted to the MV list and followed several suggestions but still have the problem.

Indication: Starts and idles fine. Put your foot into the accelorator and it bogs down... about 80% of the time.

So far: Used a pony bottle with clean gas/ drained tank, cleaned filters and used fresh gas/changed fuel filters/replaced fuel pump/measuered the length for the pump rod (it was exactly the same as a new replacement I had ordered)/replaced the coil/replaced the plugs/
and today, I just rebuilt the Zenith 28 carb with a carb kit from Treadwell Carbs (fine people!)

Haven't changed the rotor cap, conensor or otherwise messed with the distributor.

It's liek it will sit and idle sweet all day long.... just totally bog down if you are pressing hard on the accelerator. I can rev the engine fine if I move the control gently.

ANy ideas?