I'm guessing we're always getting new folks on this board and some of them might be looking to buy an X. When all of the boards (Voy and XOC in particular) starting catching on a while back, there were lots of "What the heck is..." questions. I'm going to put my favorite X quirks down and it would be cool if other people did also....
Rig makes loud noise when breaking in slick conditions - Yes it is normal. The anti-lock breaking system makes all kinds of noise when you really step on the breaks in slick conditions.
Gears grind going from 4Lo to 4hi. This is also normal and happens when you don't shift quick enough. Don't loiter in N when going from Lo to Hi or vice versa. The gears get out of sync and then you have to do the old "Grind until you find" dance.