Using resistor in sense line to increase range of regulated supplY?

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Hi, folks-
I've been lurking here for a while- fantastic source of info- thanks to everybody.
I need some some advice, please.

I've got a pair of Hammond 24volt regulated DC supplies that I'm thinking of using to power some chipamp experiments.
The adjusting pot on the PCB controls the regulated output between about 22-26 volts when the + sense is connected to the + DC out terminal.
Unregulated (sense disconnected) output is 39v.
Supply is rated at 5A DC. Transformer is 55vac CT.

I'd like to increase the output voltage range to something in the 25-35v range, without hacking into the PCB.
Putting a 1k resistor in the sense line seems to give me a regulated output near 35v. (The resistor is 'tricking' the regulator into thinking that there's a voltage drop in the + line ?)
Does anybody see a problem with wiring up a resistor like this, so I can switch between 25v and 35v output?
It seems to work fine when loaded with a resistor and putting out about 5W.

Thanks
John
 
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