I have a 2007 250hp Mercury Pro XS for sale. It has a bad #6 cylinder. Compression was good across all other cylinders and it ran great up until last weekend. It has 521hrs. Cause of the failure appears to be a bad cylinder o-ring which caused water to get into the cylinder and over heat. I have pics of the bad cylinder and full motor if interested. Call/text 585-348-0993 or email [email protected]. Asking $2,800 OBO as is. Located in Rochester, NY. It is currently still on my Ranger but will be taken off and set on a pallett by the end of this week so my new one can be installed.