Pimped my naked Yamaha RD 350 YPVS daily driver

Hi 2-stroke afficionados. I pimped my naked daily driver on the next level: My 1987 RD350YPVS (type 1WW) in the “N“ (naked) version. See the first testride after setting the ignition and power valve curve of the ignitec-box and re-jetting the carburetors to the exhaust. Unlike in my full-faired (“F“) RD with Mikuni TMX30 carburetors, I use the original 26mm types of the 31K version here with a modified original airbox. Exhaust system is a used DN Performance, identical to the one in my “F“ - Version RD with “bean can“ silencers in the look of the stock silencers (thanks to Michael for building those). During the testride two problems apeared: The first is, that the idle jets (size 25) are to lean so it needs a bit more revs at lower throttle. I will change on 27,5 like in the original 26mm carbs of the 1WW. The second: As you can see and hear in the vid, the clutch is sliding when the engine comes in full resonance with the exhaust at 10500 RPM. Especially