We can work around this by using heavier weight clips, and glass with 10% lead content, which is considerably lighter than 20% and 25% lead crystal. The photos you see below, show the installation sequence that took 2 days. 
Preparing the anchor point
1 Preparing the anchor point
Lifting the frame into place
2 Lifting the frame into place
Working on the top cylinder
3 Working on the top cylinder
Top half complete, starting to dress the bottom strands
4 Top half complete, starting to dress the bottom strands
Close up
5 Close up
Lower half starting to take shape
6 Lower half starting to take shape
Finished looking down
7 Finished looking down
Job done!
8 Job done!