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Old 10-09-2017, 02:13 PM   #5
Irish   Irish is offline
 
Join Date: Dec 2014
Posts: 738
I don't know about a two-stroke but on a four-stroke , I have polished the intake & exhaust & the combustion chamber & it made quite a difference! You won't have any trouble reaching 22Hrs. It's very tedious! Irish



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