I posted last night - felt like an idiot 'cause it's been about three years since disassembly. This ain't like early A's - it doesnt have the screw holes - soooo ... am I missing a part here ? Maybe a flange of some sort ? #8screws obviously won't grab - anybody with a 73-74 - could you take a look and/or maybe a photo so I can install this thing (that is, if I can get the friggin' tube in without dropping the tank !) Any advise accepted, criticism ignored.