Hello, I bought a kit used and it's fully installed but i'm still having issues getting it to run properly. The bike starts up very easily, only takes a couple pedals before I pop the clutch and it starts right up, however I have absolutely no power. If I engage the throttle at all the engine drops in pitch sounding kind of bogged down and soon dies. I have tried to get it warmed up by riding down long hills but it won't really idle when stationary. My question: Could someone please go over the various issues that could cause the bike to start easily but be unable to run for any amount of time? It seems like it'd have to be something dramatic but could it be things as simple as chain tensioning? The exhaust pipe looks clear enough but I have noticed some leakage from there and around the spark plug.