Well I got some video and some additional pictures of the YAG in operation. I was right about the output power. When tested it was putting out 8 watts and that was after removing the q-switch. Time to do an overhaul. I'll realign the optics and open the cavity and check out the status of the arc lamp, flow tubes, reflector, etc. Cleaning up the reflector and maybe replacing the arc lamp will give an added output boost and with properly aligned optics it should do quite well.
Some manufacturers drive me batty. The laser system is a Lasermetrics 9500 series from Laser Applications, Inc. but I cannot find any kind of labeling to indicate what specific model it is. According to the service manual the lowest output for the 9500s is 60W but the laser head has a <35W warning sticker.