Mismatched outputs for current doubling cables

[PinkMohawk]

Hey guys, recently picked up an Anagram, got it on my board, starting wiring it up and realised that I don't have 4 500mA outputs, but instead 2 500mA outputs, and 2 450mA variable voltage outputs. Right now, I've got two current doublers using those outputs, going into a third doubler that joins them together, with the idea being that I'll end up with 1.9A output for the Anagram, which needs 1.7mA at a minimum. Does anyone see any serious issues with this? From what I know of power supplies, this'll probably put a little more wear and tear on one of the outputs, but I'm not too concerned about that. Mostly I just want to make sure I won't torch the Anagram by accident. 

[Stub Mandrel]

How do these doublers work?

 

If they are just commoned wires whichever output has the highest voltage will be doing nearly all the work.