As I recall, if you separate the column into two sections you need a big #4 phillips. Be careful of the
heavy spring which counterbalances the head. These enlargers have all kinds of fine-tuning options,
and a lot of them were made, so if you need parts you can often cannibalize another "as is" one.
That's what I did, and ended up with two fully refurbished one in excellent working order (one with
a colorhead and the other modified for 8X10 film with a cold light). Finding extra negative carriers in
good condition affordably can take a bit of patience, but I picked up a mint one a few months ago
for about thirty bucks - in the good ole days they cost $1200 (for a spare carrier alone)! These vintage Durst enlargers are simply the best! You never get machining like that nowadays.