hi and welcome
ive had a few 404's over the years, and im currently doing another up.
you say about the PTO? has your got the pto attached to the box? because if not, they dont seem to be too many about, (i keep looking for one also)
they are fun machines, and its always good to fulfill a dream!

cheers
shaun
P.S. if you need anymore 404 wheels, i have lots!