I'll check the carb. I found a part number on the left cylinder head, 9340839. That p/n does not come up in marine engine.com parts listing but I googled it and the result I got said 1996 225 model E225CZEDE. I look up that model number on a couple of different sites and the cylinder head p/n doesn't match what I have. I really want to get the head gaskets right on the first try. It looks like I have two choices for head gaskets, 0333670 or 0345257. The marine.com picture of 034257 matches what I have with only 2 small vents at the bottom and not 3. I'm going for those head gaskets but now I wonder if I have a 225 with a 200 cowl.