Stuck in four wheel drive

Had a few delays my son came in from out of town. Once I installed the spring back on the shift fork everything works fine. I'll still do not know how that spring could have come off when I reassembled the first time but oh well lesson learned. Now if I can only get the speedometer to work again LOL
 
Yeah that's what I was thinking I'm going to mess with it this evening but the speedometer sensor does not seem to fit into the transfer case very well is it supposed to go flush or just up to the o-ring