 of snaking the vent behind the machine. But the key here is, as you've learned, you've got to do this without crushing the vent. Every time you have a 90 degree turn, that is the same resistance as 20 additional feet of duct run. So here's a couple of ideas. You can reroute the dryer exhaust duct inside your house to another exterior wall, so you want to make that as short a run as possible.