Didn't think I'd get stuck this early on, but the tunnel floor is doing my head in, and has left me asking a couple of questions!!
From Marlin's manual I'm happy that the tunnel floor sections overlap the large floor panels on the two central rails. And I can see from the pics that Marlin have put rivnuts into the centre rails (and presumably will then bolt through the tunnel floor and floor panels). But if I'm permanently fixing my floor panels anyway, is there any problem clamping the rivnut around the centre rail AND the floor panel? Then I'd just bolt the tunnel floor into the rivnut.
And what's probably a stupid question...there are two tunnel floor sections. Together these are longer than the floor? Am I missing something? Am I meant to cut one of these? Surely they can't overlap?
I hope it isn't all as confusing as this.
Maybe I just need to get my confidence up.