i have a 2002 screw fx4. the other day i put it in 4x4 and started up a hill and it kicked out and then went back in when i stoped, when i went to take it out of 4wd it kinda jurked out. i later tryed to get it to do it when i got home and it seems to be working fine anyone have a idea if something is wrong. also it has done this befor but i was not positive i gave it time to get fully engaged, but this time i did. any help thanks mike