Ivan kit and revisit to cold starting

[unfazed]

You can always buy new starter jets if necessary. However it would not be a huge issue if the starter jets were a little larger than Mikuni 42.5 size as they are not in use unless the choke is operated.
Are they stainless steel jet cleaners? I usually use brass wire  from a brass bristle brush as it will not harm the jets.
Never a great fan of Carb Cleaner, much prefer Cellulose thinners, it can tarnish the jets if they are immersed for over a few hours, but certainly dissolves lacquer quicker than carb cleaner.