I have the DEPS hardware and will use it eventually. My advice, plan ahead. I tried to build the balsa ladder and make it work in a Temptation I was building, but since I had not planned for DEPS to begin with, the exit engles at the rear were too extreme and they were binding. Had I planned for DEPS from the start, obviously I would have had the hard points in the right place to make the exit run correct.

Here's something else I intend to try and it is being used with very great success by a top local Pattern flyer (and I do mean TOP). You may think this is crazy at first, but if you use the Sullivan CF "nyrod" style pushrods, they work very well. One to each elevator halve, lashed together up front by the servo, ALA the DEPS method. Since the sliding insert is a different material than the classic Nyrod and made of some kind of CF impregnated plastic, it does not change length in any noticeable way, even over extreme temperature ranges. It's a lightweight solution, just needs to be supported properly so it doesn't flex around. I have used them on throttle on a number of big gas IMAC things (the usual suspects, a fleet of 40% Carden's etc) and they work extremely well. Believe me, if they were changing length with temperature, I would have noticed a change in the low end response of the DA's I was using. They could definitely handle the elevator job in something the size of the MW Extra, which is only slightly larger than the 2M Pattern stuff that our local guys is using them in. Probably the easiest way to get the job done, maybe even the best way.