I know you said its a AMT kit but the instructions and assembly method looks just like a old Revell kit one...I checked my parts and do not have one here...sorry would loved to be of help.
I guess I am just a old school kind of guy...the old screw chassis..metal axles..curbside or not to me are just the best ones. I am not kicking any company issued kit they all have there positives and negatives to them.
I have to get a couple of those myself....I remember building them when they came with the old MPC Dodge pickups and van kits...love to see those make a comeback someday but doubt they ever will...bummer..!