Woops, just worked it out.
I was looking for a screw or such. It's (base) is slid in from the front, held in by the spring tension and a little inside base plate. Just pushed the inside base with an Allen key and slid the large base out, thumb on the now free spring!
Thanks for the help dudes and quick response! :wink: :wink: :wink: :wink:
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