Just a quick question : I have a fairly new ZW-L transformer that has developed a loose handle. It become a problem when I turn the handle to about 12 volts and it still lowers all the way down to 20 volts after I remove my hand From the handle. I noticed a small hole on the round side of the handle assembly but cannot tell if it takes an allen wrench/philips head or slot screw driver. Any info as to how to tighten this handle up Would be appreciated.
thanks Pete