Are you talking about the countersunk camera mounting screws, Alasdair? (If you are: http://www.amazon.com/dp/B00FAVAY0A/ref=pe_385040_30332190_TE_3p_M3T1_ST1_dp_1) Or some other mounting screw? Andy.
Thanks Andy. They look a bit long. I'm more concerned about the screws for the top plate that slides in to the hot shoe. I have four base plate screws so in theory shouldn't have to worry about that. However there are no spares for the top plate. Also, I'm in the UK which probably doesn't help.
Hi Alasdair: Unfortunately the image doesn't match the description -- they are really only 1/4" long and are the correct length. I suspect the best strategy might be contact your distributor over in the UK, or email to support@freeflysystems.com. Andy.
Alasdar in the MoVI kit you should have two lengths of 1/4-20 screws. One short and one long. The long is about 12.75mm from the top of the head to the end of the threads. The other is about 9.25mm. A camera store would usually have the longer one. Specialty shops that sell industrial parts, like McMaster-Carr here in the US.