UDK to ue4 material?

Guys how do I import a pretty complex UDK material into a ue4 map?

I can’t remember which exact nodes were used in UDK or the correct corresponding versions in ue4, as it stands the material once in ue4 looks pretty nasty, I thought this might be due to scaling/mapping, but attaching nodes to alter this doesn’t fix the problem.

Is there a straightforward conversion process or a converter?

Cheers Mitch, I appreciate your help mate!