With the fabric thing all covered, there may be more for you.
The hose clamps did not seem to like saying put. I used the same urethane glue as bonding the neoprene ring to bond it to the inlet ring.
My axial gap is about 1/8". The diffuser side is left to float. Install and removal is rolling up the boot like a shirt sleeve and pulling out the ring. My inlet ring is the same. Roll it up before installation of the cowl, then reach down and unfurl it with a nice snap.