4kc lying up for 8 mths..got her goin.new plugs,fresh juice,leads new,sprayed shot of carb cleaner etc but still very lumpy at idle,wnt tik over properly,,,clears out wen u give her a gud dig of throttle but bak to lumpy/like missing on 1 cylinder wen low revs..clears wen i spray carb cleaner 4 few seconds...cnt figure it out..new inline filter,petrol is clean...wtf