Speaker Spade Crimping

Is there a tool that I can get that would allow me to compress/crimp the speaker spade so that the OUTSIDE dimension is a little more narrow?

I am trying to fit a an existing speaker spade into an amp post that has a little plastic tightener (Cary Amp) with a gap that I insert the spade. It may be a little too small and need to squeeze the spade 0.10/2MM inches. Just don't want to use a standard pliers. So basically get from 15MM to 13MM outer dimension.
 
To avoid bending it, you can grind it down, with a Dremel tool or even a bench type grinder , fine grain stone preferred.
If you don´t own or want to buy a Dremel for a single use (I would anyway, pretty useful, Chinese copies are dirt cheap) you can use a 20 cent nail file and a little patience.
They are called nail files but actually are some emery paper glued to a wooden stick.
 
You can use any vice, just clamp the lug near the corner of the jaws by the barrel. But use some kind of tape etc.
around the barrel of the lug when clamping, to avoid marring and to give a grip.
 
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I have many vices
lust, gluttony, pride, anger ... they're gonna kill me eventually

right now I am living in a small condo so I don't have room for a decent workbench with a big vise

so I have a couple of small Panavise vises