Pics for tips - need help on glass track 4 crossfire

[Treker]

After being able to do all this without any carpentry skills whatsoever, I have met my most difficult challenge at the end. I'm hoping that a lot of you who've built a crossfire can shed some light on these glass tracks. I really hate to mess up at the end.

I ordered these 1/4'' tracks. That means I can put in 1/4" glass right? They make the tracks a little wider than 1/4" to compensate for precisely cut 1/4" glass......? Or do I have to buy glass that's less than 1/4"? I know this is a dumb question but I have absolutely no clue. I tried measuring the tracks and it appears to be a little larger but it's hard to tell. They're the tracks mentioned on the Crossfire website.

I also don't understand the calculation for determining height of glass to cut. How did everyone measure/figure out what height the glass would be?

Thanks guys. Here are some pics:

When r' ye gonna finish me cage - slave

 

[Treker]

Bump.

I buy the glass tomorrow. Any last minute tips on fitting glass onto 1/4" tracks...

 

[suzuki4life]

easiest way is to measure the best you can (measure long rather than short) and be prepared to trim upper dam if it doesn't fit.