Can't really offer any useful comment, but this might help with reassurance. I have a Honda XBR500, which has the same engine as your bike (the RFVC). I've owned it from new, it's now 23 years old with 80,000 miles. (130,000km).
I've never touched the engine, or carb, or anything else, and it's still the sweetest-running of all my bikes. Only ever did the usual servicing stuff, religiously sticking to the intervals (oil, filter, chains & sprockets etc). It's done a lot of miles all around Europe.
I thought the engine was so good I bought a Dominator (NX650). Secondhand. It too has done lots of miles, about 30,000 by me, and is completely untouched by me.
So you should have lots of faith in your bike's capabilities.

Maybe you are riding in dusty and dirty places around the world, so maybe the carb slide is getting dirty. Is your air filter good and effective?
On a bike I had in the 1960s, the carb slide would stick open sometimes (no throttle-closer cable in those days). The standard cure was to examine the slide to see if there are particularly shiny or scratched places on it, which would indicate it's rubbing a little in the carb body. There were, so the fix was to use a VERY fine file and carefully file those shiny and scratched places a little, carefully wash away all the filings, and replace.
Whether you try that is up to you, but maybe you're in a place where you just have to clean the carb regularly.
Otherwise, my experience has been the less you interfere with your bike, the better.
Ride safe.

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TTR250 - London to Cape Town