Prekin,
CMP provide the plastic servo covers that you see in post #1948 in the middle of the 1st photo.
These are indeed practical but I decided to replace them only because they didn;t look scale.

I spent a full day doing this mod, fitting and adjusting the 4 flap servos and pushrods as they are on a single channel and all travel, endpoints etc is adjusted mechanically. If that is too much bother, one can use a "matchbox" which is an electronic device that sets servo endpoints on a single channel - its a time saver.