well, not realy, but the servos would be a severe pain to get out. The elevator servo is fairly easy, but you need an ultra short screw driver, or a bit and wrench to screw out the 4 screws.

The rudder servo is rubber RTV glued into the fin. I can either cut the rubber with a stanly knife blade, or cut out a hatch on the side of the fin.

But these HS-5954MG servos I have installed should last this airfrmes liftime
So Im not counting on taking them out.