ORIGINAL: Tom Nied
Yes, you do. I don't know what the designers were thinking, but yes, you do have to open it up so that you can rotate wire end first into the servo slot. Those two root ribs need to be opened up so that you can do that. You keep the the slot where it goes in the same, but inside you have to make it open enough for the servo to rotate into position. Remember, the servo rails will raise the servo by about 1/4 inch.
Wow, I just checked a second time to see if the servo fits in vertically, it's a little tight while putting it in vertically, but once it's sitting there's lots of room.
I guess I'll still sand to clean it up a bit.
But I still have to glue on the mount while the servo is inside, because of that dang rubber boot on the servo, You can't slide the servo in after the blocks are glued onto the servo tray, even if you sand the tray to get the most room. The rubber boot stops you from pushing it in, even if you tilt.