No such luck for me
On my head it is far too small even with the extra plates on it, I took my capture plate up with me to the shop to try it out before buying it but it was a no go (hence I brought a standard capture to go on my Everyday Messenger bag from Peak Design (as it doesn't need the tripod mount on a bag and I have the Capture pro on the tripod ))
I didn't expect it to work, they say on their website it works with most RC2 heads and even have a yes/no table with model numbers, mine isn't an RC2 head and it said no on the website
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Glad you got it working for ya mine is solid as a rc2 plate