I attempt to adjust my 2 speed.. i can barely even line up the shift point allen head and the hole... and i cant figure out if it turns the screw or not... any help on how to get this adjusted would be nice...

get the right size and when you put it in there you'll fell it.. what i do it get a little flashlight and point it in there while i adjust it to make sure i have the allen key in the hole

move the spur gear until u see an opening, then move the wheels until u see 2 Alan wrench screws and only unscrew the bottom one (thats deeper) with the smallest Alan wrench that your truck came with and then insert in into the hole and kinda jiggle it until u feel it lock into place.