hi! i am a canadian living in germany. i have bought myself a schwalbe. i have cleaned the vergasser, gas tank filters and bought a new sparkplug(zundkertze). my schwalbe drove for 3 weeks beautiful, no problems. now, when i give it gas it stalls or runs very poorly i get it to drive over 30km. do i need to buy a new kondensatoren? please help guys. any ideas are greatly appreciated.