X6 2 Kit missing part.

[J.Kirkman]

Who do I speak to regarding missing parts? Started the build of my brand new XFK021 kit and am missing one of the cap head screws that hold the aluminium front hinge pin brace in place. Only 1 was included but I had an extra unrequired button head screw in it's place! Only completed bags A and B and hoping the rest of the kit is OK. This is the first time I've ever had missing parts in an RC kit
Have to say apart from the missing part it's gone together beautifully so far.