[Elecraft] Astron RS-35A-Output Voltage adjustment?

[John Webster]

Does anyone have precise information on if/how/what
/where the output voltage of an Astron RS-35A linear 
PS can be changed?  Internal pot?

Currently, it reads 13.95volts at its output terminals
without load (same with minor load, i.e. K2 on receive).
This is measured with a DMM.  Reading on K2 internal
voltmeter is 13.2v and on my K1 it is 13.3 (for what 
that's worth).

I would like to raise the output voltage slightly (14.2v?) 
so that the PS could float charge the K2 internal battery 
at 13.8v across its terminals.

Note: the Astron RS-35A is a 220volt input version,
but that's on the other side of the transformer :) and 
should not be different to 120volt versions.

Any help would be much appreciated,

Thanks,

John, N6JW