On Monday, December 2, 2013 10:53:52 AM UTC-8, Pam Howarth wrote:
Hi Richard, Thanks for the Butterfly Vario input; your link, below, seems to be broken? http://www.youtube.com/watch?v=3D1i0IVkHUnWU Dave Walsh

Try this one:

https://www.youtube.com/watch?v=1i0IVkHUnWU

Richard
www.craggyaero.com