Here's the NUBM06 with a G2 and 6X pair at 15 feet. It actually runs slightly negative divergence to start and opens up a mm from it's start at the end of 15 feet with a sweet spot in the center but it runs pretty tight, this was just a test setup.
I get my 6X pairs from LSP, email him or contact through flebay. 55 AUD and that's 41 USD LINK1 LINK2