My 78 bronco was not running right so I took it to a garage. to have the float adjusted. I was told that it could not be adjusted and that the jet was not functioning properly. I was told that I needed a new carb. I had them do this since I am away from home and do not have the timeor tools torebuild my existing one. When I picked the bronco up and drove it it hesitated badly when taking off. Sometimes to the point where I thought the engine would cut out. I took it back to hve them adjust the carb. I was then told that the problem was with my distributer, it was recieving vacum but was not recognizing it, casuing it to hesitate. Does this sound like an actual cause for my problem?