The print head on my HP 5550 was moved to the far left by one of my nephews. Printer head won’t move back after shutting down and switching on again. HP support was product is now on my dime. Also can’t figure out how these were put together as it seems to lack most of the screws/bolts for the covers. Anyone taken this apart and if so, how? Can the print head be moved back to its original position? Thanks.