Boony - Yes would still have enough drop. I measured it all up to check first my set up is the rubber hose that goes from the bottom of the turbo and then on to the sump it is about 15cm so losing 1cm would be ok it'll just slide up more.
axracing - Tried to move it about and try different angles but the oil feed is just to close to the turbo they touch and this is causing the manifold to leak as I can't get it tight enough due to this issue a 1cm drop should be ok I hope and everything else will still fit on ok.
thanks for answering the question I'll get some gaskets and give it a try.
old photo as new oil feed is on now and slightly different but shows where the spacer would fit in -