Shining/bright refined clusters

Is there any reliable source to get these. I have a ql 220 faded refined jobe cluster I want to use but I fear that I will never find the shining/bright clusters i need to make a full imp. Brights seem to drop once in a blue moon at ace camp. I've never seen any shining cluster drop off any mob(refined or regular let alone a shining refined one off ace camp mobs. I've tried rolling ql 201-220 missions for random implants there but it seems like just the same 10 implant combo's come up every time and nothing new. And 90% of those implants have all the slots filled so they are pointless anyways. Whats the best way to go about completing my imp? or is it just a pipe dream?