Anyway, the weight of wheels hurrying fluid back to pump theory

Larry,

 

The nose gear, driven out by a fully charged gas spring, is of the first priority for shoving fluid back on the "up" side.  This is why people frequently see scratches on the nose door - not from the wheel going up crooked, but the nose gear knocking the door out of the way (momentarily not enough fluid to extend it) whilst it is pushed out.

 

Grayhawk