Cheers for the info Ross. Are the FK0186 COP's universal across the whole GD range? I was just going to pick them up through JapanParts, and I think I've found the correct ones but it gives me two options based on what model GD you have, and I don't know much regarding GD shapes. As per the link you can pick either A-B or C-G. Which one is it, or are they the same?
https://www.japanparts.com/parts/detail/27969
Cheers