I forgot to mention, I replaced the slip with a Barry crossing.
I did this for a couple of reasons, the first being that when I made the double slip I only used the class 08 as the test loco and after much fetteling it worked a treat, however because this is ngauge and not 2mm finescale, the back to backs of all my loco varied widely and although some would traverse the slip with ease, other locos would get pinched in the flange gaps or ride up against the V's. Of course I could have rectifed this by either widening all the gaps between the flange ways, but this would have spoilt the look of the thing, or I could have adjusted the back to backs of all the wheel sets on all of my locos, but that would have taken my focus away from building the layout.
The other reason for replacing the slip with a barry crossing is because I've wanted to make one for a while now, and this presented a perfect opportunity.
Really its just two opposing turnouts built on top of each other, but it does work well and more importantly reliably with every loco.