I should of left it stock

[Mike7476]

Got the bike was running pretty good , did the heat cycles to break it in, changed the oil, then decided to put the mikuni carb in, I watched the videos did exactly what they did and It Boggs out like crazy , have to give it gas to start it so thinking either I put it in wrong , so I actually ordered another one insane I know, same thing have to give it gas to start and Boggs our at a certain rpm I’m not to mechanical but I thought this was supposed to be easy, I put the 110 jet in the carb but I see that being done in the videos , not sure what to do here ? Does the carb just need to be tuned how do you do that ? After I start it let it warm up the electric start does work right when I push it but not after it sits a bit , I’m just sort of lost here ...can someone take the time to walk me through this I’m very frustatayed