I have managed to fit two layers on the fc stack by replacing the original aluminium fc standoffs that come with the frame. I use a long screw together with two plastic screw nuts instead. That will save you 3mm. That is enough two fit a second layer underneath the aluminum cage.

I haven't even got to weather the cage will fit on our not yet lol..
I thought about using nylon screws but thought they might not be strong enough with them being part of the structural strength of the frame..
I'm not at home at the min but are the standoffs that come with it aluminium then as i thought the ones that came with my kit are plastic seeing as they are black..
Is there any chance u could post a pic of your build.. especially the mounting..it would greatly help me out.. thank u..

I am away on business until Friday. But I will post some pics on Saturday.

Ok cool.. thanks for the help so far mate..

Any chance of a pic of your mounting mate this thing is driving me mad lol.. think i may have bitten of more than i can chew for a first build lol

Hey Bud. Sorry. I am still en route. I should be back home home on Thursday if nothing comes up.

I will post a pic on the scale short before the maiden.

Hi mate.. I have almost the same set up as u.. I'm just struggling with how to mount the elite bundle in the obsessions frame.. any advice would be greatly appreciated