Re: Carbs...Post-Rebuild
The jets should be snugged up to make sure they do not back out from vibration.
The plugs are there to keep just anyone from adjusting the mixture screw, only mechanics that are working on it with the proper tools and knowlage are to make the adjustments to meet pollution standards. Most other motors do not have the plugs.TO CLEAN PROPERLY THESE NEED TO COME OUT along with the adjustment screws.
Maybe best if you just take to some shop to work on it and fix your problem if you do not feel you want to.