I am looking at a boat to buy that has a Volvo/Penta 3.0GL. The owner says he had one cylinder sleeved last year? I don't know anything about these motors or this process and if being sleeved is a bad thing that could cost me some bucks in the near future. All of your input would be greatly appreciated! HP, reliability, etc....<br /><br />Thank You,<br />Toby