Okay, this may seem pointless, but it needs to be discussed.
I've found a working method to axle-loading a Servo motor in Stock, DSL, and IronForge, called "Servo Loading."
You basically do the same setup as you do for snapper loading.
However, this is VERY difficult, especially if you're using the thin body servo, and you have to try multiple times to actually get the servo axle to fly clean off.
I recommend you use the RAD for this glitch. It's easy to fit, and also easy to axle-load.
Once you get the servo axle up and away from the body (or chassis in that matter) go ahead and attach the components as you would when doing the Snapper loading glitch.