I actually liked that vacuum slot idea, until I saw that picture
no clue how many hours on that
glide, if a thousand or so, it's not so frightening.
what's frightening would be if the operator never cleaned out the gunk , fibers and hair
question.... do the outside holes draw vac too?
if so, the wand slot is too wide front to back
making it of major importance to keep wand at optimum angle/flat to carpet to prevent mega air leak/lose of solution recovery.
..LT.A.