@Seth1025 ..sorry ..didnt see your post until now.
just open up the holes as pictured...7444 has to oval brackets iwth hanlde holes....open up both at 6pm mark to allow for ash catcher bar to fit.
top to bottom...bowl..ash bar..slide in handle....
toss the h bar disc...its useless with this mod.
to remove rusted old 7409 ash sweeps..just cut the tusted ash sweep handle to remove...i use dremel eith fiberglass cutoff discs.