Well I made the tray to screw onto the bottom.


This was actually the 2nd version as I made a mistake in the original and the screws were 1mm off

Now the servo gave me a few problems to install
1st problem is the stock servo horn has a different splines then the servo so it doesn't fit, and also even if it did the servo is too tall to let it even fit.
So I had to forgo a servo saver, and just rigged it straight to a servo horn that was included with the servo.
I put a small screw into the 1st hole on the servo horn, and cut the rest off. I also shortened the screw, and grinded off some of it so it fit into the hole the original servo horn fit into.



I then installed the servo, and it barely fit.




it is butting directly up against the motors wires. There isn't even a fraction of a mm of space between the servo and the motors wiring, but hey it fits
.