I'm done fitting the new Savox LP servos, thought some may want to see pics of it...

http://www.bishopsraceblog.com/?page_id=221

In the end like I said, was quite easy, carefully remove the outer section of the grommet (which may sacrifice some water proofing, but you could always smear on some silicone if your worried), and the servos just slide in, there is 'just' enough room, no idea if your using another brand servo...