First and foremost now that you've heard all the know-it-alls LOL now the expert opinion.. BAHAHA...
I know most want the world and want it now so you went ahead and bought what you thought was good but my expert opinion would have told you to wait 3 months till Speedmaster has their Black Friday sale and have a brand new set of aluminum heads sent to your front door completely loaded with springs and valves for $700...
And quite honestly I would have ran the mismatched heads and seen what happened first before I went and spent my money on some 10-year-old used heads...
In the end I don't see anything you're doing wrong as a matter of fact you're doing everything right you're enjoying your hobby... Remember because that carburetor is new in a box doesn't mean it is adjusted correctly... Don't let that simple carburetor be a mystery to you.. read the instructions and tuning manual twice as the first time you'll go over it going blah blah blah in your brain and then the second time you might actually retain some stuff that'll help you and don't forget to refer back to it as well..
Now you've heard from the expert it's time to enjoy... LOL..
