Another reason for thorough preflight...
Correct me if I'm wrong, but during R44 pre-flight - you don't even climb on top to check the pitch change links or anything else on the head. I believe it is just a visual inspection from the ground? I don't fly the R44, so my memory from RHC course might be off on that ship. Anyway, people complain because I take almost a half an hour to preflight an R22. They can get bent (my a$$ = my rules)!