Wql,
I'm not sure what you mean by "the load outputs power" and "since power likes to supply power".
What some people mistakenly belive is that they can put power supplies in parallel to increase available power to the load (the thinking is = can get 5amps from that PSU and another 5amps from that PSU giving me 10amps).
For a number of reasons it does not work unless you take the propper precautions (some lab PSU's have four connectors +V/+s and -V/-s the two 's' connectors being 'sense').
If you look at the cct diag of power supplies with multiple output transistors you will see smal values of resistor in the power path, these generate 'stabalising' voltages that allow the power to be balanced (the exact method varies from supply to supply).
Also looking briefly at your photos I'm going to mention "power supply" decoupling. Most people know you should stick a capacitor across the power supply rail to reduce "noise" etc. However they general just think an "electrolitic" will do. Not so with RF you often need to use three capacitors, an electrolytic for low frequency decoupling and various values of ceramic capacitor, often the smallest can be just a few tens of picofarads surface mount mounted as close to any "power circuitry" as possible, to cut down PCB track inductance effects. You especialy need to do this with prototypes where there is insufficient "copper weight" for ground plains etc.