I purchased a used non running Stihl MS440 recently. The previous owner stated it had 152 PSI of compression. I was wondering if the cylinder could be re-used. It appears the plating is worn off in a few spots and the cross-hatch is largely non existent. I would like to just try to hone the cylinder if it can be saved. What are the service limits on the cylinder? I have attached a few photos. Thank you for the help!