Hello, have an Aerox Tech 3 built in 2003. Mileage 16.000, before 600km new 50cc sports cylinder loud previous owner. How should I say, it is so far only a hopeless case. I bought it to me about 4-5 months ago and drove just 1-2 weeks ago. At the pick up everything ok, drives great, was of course already tuned and bli blub. At home arrived first on throws and drove off. So it went about 1.5 weeks, until she just wanted to overnight then no more. Carburettor a We built it, cleaned it, reinstalled it. 2 days later it didn’t want to do it again. Repeated the same process, didn’t go. So I went on troubleshooting and first ordered a 17.5mm Dellorto PHVA carburetor as “precaution”. Built in, went again for 1 day. After that it had a problem again, this time it was due to the spark plug. New ones turned in and it ran again. I also noticed that there was nothing more in the cooling water tank so I just looked if it was tight and It was okay. So, I left him standing for a while, believe 1 week and after that he had already had the muzzle full again. All standard things like carburettor check, spark plug dry, etc. tried, unsuccessfully. Then I had the suspicion that the membrane did not close anymore and bought a carbon membrane block (a few days ago). Arrived, installed directly, but ran again only very very bad (i.e. stuttered until the goes no more, wanted to k Take a gas, go out at 40km/h or drink off…). Now I’m puzzled again and don’t get any further with my head. Is there anyone who can see through and tell me what’s wrong? Thank you in advance, Dennis