Never ever flown one...
Is max reverse mandatory on landing, or are there charts for an idle reverse roll out. It also seems that the reversing buckets don't deploy till nose wheel touchdown...correct
As this is an FAR25 airplane, Reverse does NOT go into landing distances required tables. No idea if the 10 has tables WITH reverse, but I doubt it, knowing Cessna...
How do you get the idea it is mandatory to use full reverse?