Cutting a notch in the Cover will more then likely cause more "Undue Stress" on the already stressed Cover.
Get the Slave support, then Do the Mod from the Link you were given, It's the best way to do it.
DO NOT CUT A NOTCH, you WILL regret it.
Ask, Listen, learn.
It's what this boards for, hope you learn alot, I have.
Peace,
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