I tell you what I have an abundance of mate, nylon spacers form my props, they are 2.5mm high and around 7.8mm wide with a m3 hole in the middle, trust me your address and I will post a few over. will make yours a total of 7.5mm.
Cool cheers fella that would be great if you have.
Im going to order some slightly longer m3 screws too as the ones I ordered to do this job are just on the limit.
Will trust over now. I have 2 screws per arm
This is what I am playing with space wise at the moment.

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