I'm working on a '70 Glastron Bayflite 164 W/ a Volvo/Penta AQ130/250. Had a 'slight' miss and wouldnt rev over 2100 RPM. Well, I did a comp. test and was SLAPPED in the face: #1-0 psi, #2-160, #3-165, #4-155. So I pulled the head expecting a blown gasket or cracked head (I have read that the slighest overheating will pop these heads). Boy was I suprised to find a perfect gasket amd a pretty head, but a hole in the#1 intake valve- about the size of a pencil eraser-on the edge of the valve. The piston, cylinder, and the comp. chamber isnt chewed up like one would expect, but the exh. valve scares me- the valve piece had to go somewhere, right? So I'm going to replace both int. and exh. valves, but my problem is FINDING these valves. I've called all local parts stores with no luck. I've called the nearest volvo dealer with no luck. I've called my volvo/penta boat man but he will only sell me a complete head for $800.00. Come on, really? I just need 2 valves. Can some one please HELP ME???