lee - I am curious about the heatsinks you added to those two transistors in the power supply.
are those mouser parts? are they mounted with a special screw/nut? it appears that there may be some type of thread lock compound applied to them, is there?
Yes, they are Mouser parts, the number is : 532-577304B00.
I just used a small nut and bolt I found in my spares box, nothing special, you should be able to find something at your local hardware store.
As for the "thread lock", it was just some blue touch-up paint I had lying around. Put a smear of heatsink compound between the transistor and the heatsink.
Hope this helps,
Lee.