You mean like try and force it open?
If you unlock you can move it but if it's locked down (key just stops you from being able to pop the locks up) then no it's pretty solid. Granted I haven't tried to push super hard to force it open.
Just installed mine and agree the instructions are a bit rough.
I did use both sets of weather stripping but had someone else sit up on the canister edge while I tightened down the front clamps. Looks tight from the edges now.
There is one small spot on each side near the cab window corner...
Dude thanks for this idea! I did something very similar with mine. But I put a 5/8" thread to 1/2" plug 90° right out of the cannister so the drain tubes a nearly level there (best match I could find at hardware store). Then I used a 5/8" 90° compression on the back corners.