i use DFP alot on 900*. only thing i notice diff is the sound. like it was quiet, now its a bit louder. but so far its going good. PLUS you can get another for free if there is a prob. just call logitech up and explain your problem.
I am pretty sure they had that in mind while designin the wheel....i have had mine for 2 years now....still no problems.....except for a double shift if i use the buttons on the inside of the wheel....but...other then that dfp rocks so u can rock it hard...u can always do a switcheroo if it starts buggin u...i.e. buy new throw old an return....ghetto but works...although i'll never do that