I mounted mine by routing out 1/8" roughly (perhaps a hair less) in 5/8" material
They seem fine to me.
Basially I routed out an area to keep the joystick base mounted nice and secure/stiff. The added depth was bonus I guess. I recall wondering if it would be high enough also, but then my magic sticks from ultimarc were basically the same height.
now that theyre in they seem fine. except f course that pushing down on my joystick reboots my computer, but thats another story...
That might speak volumes of my opinion right there. I will stop typing now