Opinions on Sideplate Fitting ?

[sheepherder]

I'm asking for opinions on fitting a non-OEM sideplate to a mixmaster Luger.

Here's what I have so far:

- Mixmaster Luger w/humpback Mauser frame, Sarco repro artillery barrel, all-Mauser upper
- Assortment of sideplates with various problems

Some of the sideplates have bent front tangs [red circle]; some have too-thick rear tabs [blue circle]; some have too-thick front tangs...

The Mauser on top has a sideplate that is a perfect fit on the faux arty...Unfortunately, it is a perfect fit on that Luger as well...

What is your method of fitting??? Do you bend or file the front tang to get it to fit??? Do you file/mill the rear tab to get that to fit??? (The rear tab on the 'long-humped' sideplates are .005"-.007" too thick for the frame slot).

In my mind, the sideplate with the too-thick front tang is the easiest to fit...It just needs a little filing to let the takedown lever fully engage...

...But is that the 'right' way to fit a sideplate???