Moto Morini 3 1/2 does not start

Good evening together, I already opened a topic a few days ago to my Moto Morini and there could also be helped me very well, but now I am faced with further problems. Here first an update to the original problem with the correct vocabulary 😉 The carburettor of the 1st (front) cylinder has spewed fuel from the carburettor through a golden bypass tube (picture I add again). The tube is as far as I have understood it, there is to the Stand-up gas (if the slider is closed in the air intake) to enrich the required air through just this tube with fuel and to conduct it into the combustion chamber. I then disassembled the carburettor, checked it and was able to minimize the amount of fuel ejected. Furthermore, due to a tip in this forum (thanks again!) I replaced the carburettor of the rear cylinder with that of the front. The result: Now the fuel is spraying from the rear V gasifier on the front cylinder. The front carburetor on the rear cylinder is normal. So I ruled out that the carburetor causes the problem. (likes to correct me if I am wrong there). To the info: In various start attempts the front spark plug was always wet and the rear only slightly moist. Now I thought the problem a little bigger and found that the inlet valve closes in my opinion too late (if the piston is compressed again) . This would a This means that the inlet valve of the 1st cylinder runs on the same cam as the outlet valve of the 2nd cylinder that the control times are adjusted. (1st cylinder. Inlet valve closes to late = air is blown out of the combustion chamber again by the carburettor – carburettor Spits petrol and spark plug gets wet. 2. Cylinder: Outlet valve opens too early = fuel air mixture is released unburnt again – spark plug is almost dry). and the timing belt changed (ratio of crankshaft to camshaft changed by a tooth.) Don’t worry, not so far that valves and pistons touch each other. The whole has also shown a small success, but now instead of the pure petrol comes a atomized fuel-air mixture from the tube. Furthermore only on the 1st cylinder. In addition, the carburettors in the intake tract are in my opinion quite wet. Another problem that has now occurred is that the ignition current interruption r by changing the camshaft no longer stands on the correct mark for the OT, so I think that the adjustment of the steering times might not have been helpful after all. Addition: The said carburetor is the one in driving direction left If someone still wants to read this text and maybe have a good tip, then I would be very happy. Nevertheless, all of you have a nice evening and thank you very much! Tom