MK BellCrank Problems ?

I have heard rumours of problems with the MK bellcrank used with the 3/16 CH carbon fiber rod. The problem being that the CF rod is to ridged resulting in failure of the rod ends or failure of the digital servo gears.
The instructions recommend supporting the rod in two places with ½ inch sponge to help prevent this.
I know some of you are now using a pullpull system to the bell crank – but that’s to much hassle for me – especially if your travelling to different climates and the pullpull can need adjustment.

A possible solution could be the use of the less rigid DaveBrown glass rod or the use of a metal geared digital servo ?

Any thoughts ???

Shane