Mounting Tarmac SL5 2017 QR to NEO 1

Hi,

I usually put my Fuji with rim brakes and QR on my NEO 1 but tried putting my 2017 Tarmac on and found that there is a huge extra amount of space between the rear frame. If I put the Tarmac on and tighten it in, it bends the bike frame way inwards and actually isn't stable it all. 

I measured the distance between the rear frame stays on the fuji and it's roughly 135mm...the Tarmac is way more.

Is there an adapter for the non drive side of the NEO QR skewer?

What can I do?