Spektrum Rx question

[Beemerider]

I have a new AR6200 rx that I'm preparing to put in a new plane. I noticed this evening when attempting to plug in servos and esc that there are ribs molded into the receiver case that won't allow me to plug in my servos etc. I remember from my early 72 mhz Futaba days the rx's and servo leads being polarized to prevent improper connection. I assume Spektrum servos have the polarized plug to facilitate proper connection.

Since I'm not using Spektrum servos I intend to use my Dremel and grind off the plastic tab molded into the rx case so as to allow me to plug in my servos. Is this the proper way to approach this or am I missing something? (other than buying all my servos from Spektrum)

In the attached pic the tabs are somewhat visible in the bottom side of the plug opening.