Thanks Raptor the carb I installed is the same body as the original. So I assume it's not too big. Will I have to replace all the jets in this carb with the jets off the original carb or can I adjust the mixture? When I first started this project and tried rebuilding the old carb all of the jets were screwed all the way in until they stopped. There was only one "screw" that had some adjustment to it and its adjustable outside of the bowl. I dont know what this "screw" is called but is this likely to be a mixture adjustment? I'm new to carbs and don't have any experience adjusting them. This "screw" is different on the new carb compared to the old one. The old one was a flat head screw, this one just has 2 dots.

You need to get the right size jets in it 1st, then do the fine tuning adjustment with the screw. The screw you are talking about is probably the air adjustment screw.