Aprilia am6 bogging

[padly1995]

Hello,
I downgraded my 2002 Aprilia (AM6 engine) from 80cc to 50cc. I have Dellorto PHBG 19mm carburator, polini free flow air filter, malossi intake manifold and aftermarket reeds remus exhaust with akrapovic muffler.
(Previous owner fitted all of those parts so I`m not sure about reeds type and intake manifolds size).
So I fitted 50cc piston and cylinder. (I kept old 80cc head, because it didn`t came with the kit. I called the seller and ask him "How can you sell kit without a head and if I can use the one from 80cc kit", he said that I can).
Now it boggs really hard. You can`t even ride it. In neutral if I manage to get to high revs by adding little big of trottle flames start to shoot from exhaust.
Spark plug is wet.
I tried jets from 50 to 72. I have also changed pilot jet (can`t remember the size right now, but I can check tommorow).
I tried without air filter and also taping down air filter, but no luck.
If I add little bit of throttle I can get to high revs, but if I add more than just a little it boggs down instantly like "booooooooo".
It idles fine, there is just a little of difference between choke off and on.
If i try to ride as soon as I release the clutch it boggs.

Did anyone ever had 19mm carb on 50cc am6 and what jet size did you use?
What could be wrong?


Thank you