[Amps] dropping voltage

[TOWN COUNTRY FLOORS Owner]

I have a small SS PS that I am going to use for a piece of vintage gear.  It 
supplies various voltages to the equipment that are fine but I need to tap 
the input voltage , which is 122vac, to an octal plug.  The problem is that 
I should have 115vac at that point.  What is the best way to accomplish this 
without a large dropping xfmr or am I concerned over nothing?

Larry AA7LR