Piaggio TPH defective. I don’t know anymore!

Hello community. As already written. My Typhoon doesn’t want any more. I’m admitted > With the nerves at the end. I think I’ve tested pretty much everything there is to test. I’m curious if anyone else has any idea. So – It’s about a Piaggio Typhoon (TPH) year 2004 with 19500 km on the clock. He spings. Also accepts a bit of gas. Accompanied also on approx. 15 KM/h. If now the Choke closes the nozzle after approx. 1 minute he loses stak in power until he abst What I’ve already checked! – Carburettor cleaned 3 times. Bemser cleaner – Press air – – New candle – New CDI – New membrane – Behind the Variomatics cover everything is “dry” – Intake nozzle is not brittle – Exhaust piped. It easily allows air through – cylinder disassembled. No Riefen – Piston rings O.K. The engine was running I moistened all rubber parts with brake cleaner. No speed change. Compression 6.2 bar. No great value. But should be enough. Now bin ic h completely with my whiteness at the end. Does anyone still have an idea what the box has? Thank you 🙂