[Elecraft] RS Power Supply Adjustment

[Darrell Bellerive]

I have a Radio Shack 22-8247A 12 volt regulated power supply.
http://www.radioshack.ca/estore/Product.aspx?language=en-CA&product=2208247&category=Power+Supplies&catalog=RadioShack
I would like to increase the voltage a little to keep the proper float
voltage on the K2's internal battery.
I can see an adjustment pot on the circuit board in the power supply,
but it is not marked as to it's function or any other identification. I
suspect that this is the voltage adjustment. Before I go messing with it
though, I thought I would ask for opinions. Has anyone adjusted this
model of power supply? What else in a power supply would need
adjustment? Should I just go ahead and try adjusting it?

73, Darrell   VE7CLA   K2 #1973