carb needle

["Glen Byrns" <grbyrns@ucdavis.edu>]

For those of you running a single H4 on a 1275, what cam/carb needle
combination are you using?  I'm running a single H4 on a Howley manifold,
1275, VP7 cam.  So far, I've been using a "GT" needle which gives me 27MPG but
still indicates slight richness at most throttle settings on an O2 sensor.
Power is good and smooth throughout pedal travel.  Since this is for the
Austin A35, mileage rates slightly ahead of HP.  Suggestions based on
experience?

Thanks,
Glen Byrns