The Laguna iQ 4” PVC hose to the dust collector was in pretty rough shape where it attaches to the brush/boot, especially with vacuum on. I swapped it out with a 360° swivel fitting plus a 45° elbow, and removed the collapsed section of hose. Jogged through the full range of motion and it seems to work as expected.
I used the machine yesterday and the whole top section came off and I noticed someone removed the spring clamp, getting it back on was a struggle and didn’t result in a great fit