Hello community. My spin B05 BJ.2006 has power loss, as soon as I want to give gas, the speed goes down very low. As if it is choking off immediately. Yes it is called wheelbarrow^^ The spin now has more than 37,000 KM down. New cylinder is 4500 KM old. Carburettor I have changed several times but without success Only from 30-35 KMh it comes into motion. The spin drives on incl. approx. 52 KMh…LOL distance ring no longer in… no lockup but at 52 KMh is over! Neighbor is policeman and checked it for me and everything is fine. I suspect that the compression has to be adjusted. But how do you do that and especially where?I checked: Carburettor: Is clean and nozzles also. Air filter: quite new and OK. Benzine hose: is new.Benzine pump: Is healing.Benzine filter: Is only 3000KM old…without dirt. Krummer has been cleaned with a long bottle brush. Stainless steel exhaust is 12,000 KM old and still ok. (No rapping) Someone knows how to use the compress ion adjusts or is there something else that I should check? LG Celestis PS: Colleagues suspect the membrane but how to clean without completely disassembly?