Lilflyboy - you could well be right. My only direct experience is with the standard 675 HP Van - but a local operator does have the EX and I haven't seen or heard of any issues from them with the higher power.
Its the props that seem to take the real hammering depending on how ham-fisted people are with looking after their kit. Also there's been a fair bit of damage caused by not getting the nose up early in the take-off roll and keeping it up as long as possible in the landing roll, then letting it down softly with minimum skidding/beta and braking to keep the nose from kicking stuff up. I still don't quite get how the stones kick up from the mains into the wing but I guess it might be possible...
Its a seriously nice aircraft, and worth looking after!! Even in Sudan...