Nice sound :-) If you hear the inlet that much your 4-1 must be too silent :-)
All years with 4-1 made me to miss the 4-4 pipes and the wonderful sound during deceleration.
Well made 4-4 set would be fine. Shorter ones with racing look and good breathing, maybe stainless steel.....
EDIT: I had to visit my garage and open my old dirty carbs to check.
A little bit more than I thought.
Mains 147.5!
pilot 40
Air screws 1/2 turn out.
I remember that I checked the mains at full speed and reduced throttle just a little bit. If the bike accelerated by reducing the throttle I changed mains to bigger. Also checked the plugs, kill switch at full speed.... The bike went well, mostly long touring vacations to north Italy, Spain with 2 much younger and slimmer persons + bags with luggage + tent_sleeping bags.
3 holidays. High speed all days long, mostly 150-200km/h according to the speedometer. I have blurry memories when driving in heavy rain passing trucks on Autobahn in Germany, could not see that much, reduced speed and saw the needle at 160-170km/h
If I should use the carbs today, I should upgrade the pilots and test the mains again.With gasoline of today with extra ethanol it might be OK and not too rich.
I hope my VM29's are not too lean, only 127.5, pilots 25, otherwise as CB750 spec. Maybe I'll upgrade to 130.