Hello mate,
I had the same problem.
If you take the black plastic trim off of each side you will see the runners that hold the glass and three bolts.
Loosen all three bolts on both sides and then push on the glass gently - ypu will see it lifts. Slide a piece of thin metal stock from the local homeware store between the runners and the glass on each side. One small piece around 10mm long on each end should be enough enough. Tighten the bolts{not too much} and try that. The stock i used was 2mm thick, 10mm wide stainless and this worked a treat as it does not foul the runners and the plastic covers conceal it, but you may need something a little thicker.
Hope this helps and sorry i don't have any photo's.
Si.