Extension pillars for EQ5 / M10 threads

[Commanderfish]

Hi there everyone, does anyone know of a lighter pillar extension for the EQ5/CG5 type tripods?  The Tripod in question is actually a Berlebach but it doesn't make any difference as it has an M10 male thread and fits the usual CG5 extension.  I use this Tripod in my grab and go set up with a Mini Giro Ercole. The usual CG5 extension is heavy (about 5kg I think).  I'm looking for something lighter that still has M10 threads.  The SW AZ pillar is the wrong fitment at both ends (3/8") and is also a lot shorter.

 

Any ideas gratefully received