The sticking hub is not that big of a problem. If it does, just do like atving said above in his post. Very simple and easy.
And remember, even some pickups with auto hubs have to back up before the hubs will release. It is something you have to live with now and then when you want auto hubs.

 

How do you figure the KingQuad as 3wd? All you have to do is lock the front differential and its true 4wd. I know from factory its only in super low but if you take the stop pin out of the shifter mechanism you can lock it anytime. I did that to mine and what a difference. Turns the King Quad into a monster hang on to the bars

 

Doh I just read your post again you said Quad Master not king quad sorry hehe.