I need an long plate & lens holder

Hi Guys!

I am struggling with stabilisation problems with my new equipment. I´m an proud owner of an Eos 5D Mark 4 and an 600mm L II IS 4.0 lens and Gitzo and Sachtler tripod&head. Many of you recommended this equipment. The problem are vibrations at filming. I looked this probelm up in the Internet, and found some solutions. An plate that fixes the camera body with the mounted grip, the extender and the lens in an Arcswiss-compatible plate.
But I can´t find an plate for my system.

Something like this, but with an plate to stabilize the end on the lens too (with two rolls): https://siruiprofessionaltripods.wordpress.com/2013/02/28/sirui-telephoto-lens-support-plates/


Can you help me, please?