Due to labor and repair costs, the newer four stroke engines will not need much of a repair to become a parts engine. My local marine repair dealer says it is far cheaper to just replace a short or long block, rather than due a teardown to make a repair....at least for warranty repairs. Once the warranty is past, any serious repairs become to costly. In my area, there is no problem getting your 2 stroke repaired, and most repairs are very affordable compared to the replacement cost for a new motor. Many Mfgrs have now extended their warranties long enough to get the motor loan paid off.