First a complement and then a criticism!
The servos fitted to the HSD T33 are very good, very smooth and hold well.
"The Criticism" they have been installed by being glued in holes dug in the foam like a cheap toy foamy and cover with a piece of vinyl !.
The older "my older" HSD jets had a rather nice plastic servo box molded in to the foam with a very neat hatch held down with 4 discreet screws.
If these servos need to come out for any reason its a matter of digging them out possibly wrecking the finish of that part of the air frame, lets hope they are reliable.
I recommend if a servo packs up and you have a dealer close send it back and get the whole part or ask them to fit a new servo and paint it.