RE: bogging down at full throttle
if it bogs out spiiting fuel out the exhast and sparying smoke.. then its rich... turn the high end in a little at a time.
give the engine time to adjust. before adjusting again as teh extra fuel has to burn out first.
if it sags and cuts with little to no smoke and fuel spitting then its lean. richen it out a full turn then start tungin back in. when you find the "peak" turn it out a click or two (always better to run a touch rich then lean).