Hello I have a 2 stroke 50 cc Kymco Roller KB 50 and have seen by chance there is a means to clean the engine from inside Menex exe Fuel System Cleaner, then there is still liqui moly Bike additive 2 stroke, Procycle Fuel System Cleaner, Motul boost and clean moto… What should I take? Additive should I always do in again? Additive is something else? I want this because my scooter no longer jumps when cold, ap and too goes out when goes on over estart. Kickstarter. I built new ones, and Iridium. I don’t dare to disassemble carburettors, thought I’d buy a cleaner like this for 10€, drive rum and my scooter is clean. I don’t know. Is that good?