Most of these will be in order from BLU spawn to RED Spawn, but a couple were taken after I fell to my death and I noticed something new. It's your map, so I doubt you won't be able to find a part of the map where I took my screenshot, and most of the time I tried to incorporate signs so you would know where I was.
http://dl.getdropbox.com/u/1490725/pl_outback_rc0000.jpg
Side face of the track's wooden platform. The side of the wood barricade showing. The displacement in between the mine entrance and the building. All are dark.
http://dl.getdropbox.com/u/1490725/pl_outback_rc0001.jpg
I dunno if it's me, but I seem to not see any cubemaps.
http://dl.getdropbox.com/u/1490725/pl_outback_rc0002.jpg
On one of the paths to the right (near the next picture). I'm jumping on some wood, and looking at the roof. I see something clipping through.
http://dl.getdropbox.com/u/1490725/pl_outback_rc0003.jpg
Displacement needs fixing.
http://dl.getdropbox.com/u/1490725/pl_outback_rc0004.jpg
I can jump up on the lip of the rock.
http://dl.getdropbox.com/u/1490725/pl_outback_rc0005.jpg
Other than many of your stairs looking odd witht he displacements and such, that bottom step is very dark. Also: Player clip all of your stairs, please.
http://dl.getdropbox.com/u/1490725/pl_outback_rc0006.jpg
By the truss, you can see some displacement popping up. Also, I can barely fit on that rock, but I can. Player clip it some more.
http://dl.getdropbox.com/u/1490725/pl_outback_rc0007.jpg
I can jump up on that.
http://dl.getdropbox.com/u/1490725/pl_outback_rc0008.jpg
These windows are solid.
http://dl.getdropbox.com/u/1490725/pl_outback_rc0009.jpg
Where the two walls meet, it's dark.
http://dl.getdropbox.com/u/1490725/pl_outback_rc0010.jpg
You can see a tiny hole.
http://dl.getdropbox.com/u/1490725/pl_outback_rc0011.jpg
Hard to tell in this picture, but I'm on a plank that is under a wall for detail. Make it nonsolid or playerclip it.
http://dl.getdropbox.com/u/1490725/pl_outback_rc0012.jpg
Oh no! Dust motes!
http://dl.getdropbox.com/u/1490725/pl_outback_rc0013.jpg
Let us rocketjump over that. If you don't want us to stay on top of it, put a gentle push trigger on it.
http://dl.getdropbox.com/u/1490725/pl_outback_rc0014.jpg
This was to remind me to tell you to playerclip your stairs.
http://dl.getdropbox.com/u/1490725/pl_outback_rc0015.jpg
Pink gold? Also: Up above, in picture 0011, I'm on a plank under windows, and you can see them on the top right in this picture.
http://dl.getdropbox.com/u/1490725/pl_outback_rc0016.jpg
I'm on top of a support for a light. Playerclip it (it doesn't even look like I should be able to fit, which I only can with crouching anyways, so a playerclip works).
http://dl.getdropbox.com/u/1490725/pl_outback_rc0017.jpg
I'm on the wood around this metal sheet.
http://dl.getdropbox.com/u/1490725/pl_outback_rc0018.jpg
That displacement coming out of the ground on the left is weird. Seeing the thick wood, I would imply there wouldn't be any ground coming through it.
http://dl.getdropbox.com/u/1490725/pl_outback_rc0019.jpg
Missed the edge of a roof here.
http://dl.getdropbox.com/u/1490725/pl_outback_rc0020.jpg
Those barrels are clipping through each other, the ground, and the wall it's by.
http://dl.getdropbox.com/u/1490725/pl_outback_rc0021.jpg
Cubemap again? Or is it just that bug I get occasionally?
http://dl.getdropbox.com/u/1490725/pl_outback_rc0022.jpg
I do believe this is by the end of the track. The prop's clipping through the wall.
You do a good job of preventing rocket jumping onto props. A lot of nonsolid props

Make sure to playerclip your stairs.
Also, may I say you not fix these (and anything others/you have found) and release an rc2? You should do some more testing first, or go back to beta. You don't want too many release candidates, and nearly all of these screenshots aren't bad things that need to be fixed. I may take another look at it again later on. Keep it like this for now.