im having the same issue with cold starting,it chucks and will not run right untill almost fully warmed up close to the 80 celcius mark,whats this so called seafoam,where do you get it and how much is it,i regularly run lucas fuel injector cleaner and upper cylinder lube,its apparently not working.

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enjoy life,take the coal that is handed to you and turn it into diamonds. { PHILLIPIANS 4:13}