EC300 2018 Knock on steady revs 🤦*♂️🤦*♂️

[fabiopaulo]

Hi, i have a GasGas EC300 2018 and when i go with steady throttle, lets say, 1/2 throttle i heard a knock sometimes, not a sequential One like a rod bearing, knock knock knock, it sounds different, but it really pisses me off. When on stand and you rev it until half throttle it does the same. When idle it sounds pretty normal and when i go full throttle its good too. some friends said that is normal on 2 Strokes but i don't think so.. do you have any idea? Usual problem? Use RON98, mixture @50:1. The top and bottom end are new, 10hours.