Tommy makes a good point and the signal strength issue can be improoved by running a higher float level. There are some tuning tricks when running a very large carb and the result is positive with no significant drawbacks.
More specifically: I have run and set records with a 34mm on a 60cc engine altho for this I usually run a 28mm simply because the formula one hard cornering wont allow as high a float level.
My mod (secret other places, not here) is to make a new emultion tube that is taller then the stock one for two reasons,
First, it is where the fuel will flow when the carb floods from the level being to high, this makes it tolerate a higher float level better
second, The fuel will discharge from the top of the tube into the venturi but from a higher elevation thus giving the mixture more time and opportunity to vaporize before falling to the intake floor. This is important because at lower rpm with a big carb, velocity is low making vaporization difficult. Once the intake floor is wet with fuel it is hard to revaporize this back into the airstream without washboards, floor air jets and little duckbill jumps but you likely wont have to mess with these other more extreame alternatives.