Yeah, I recently received some of their quick release plates and lollipops for a DIY build. No matter how I screwed them together they wouldn't go in their receiver plate... luckily I ground down the offending screws to be plane with the countersink. Dremel = best $50 I've ever spent. However, for lollipops, there's really no other options. Kino doesn't even sell their mounting plate--you'd have to buy a whole fixture and THEN the mounting plate too.
Interesting you brought this up. I beefed to Cool Lights about the crap QR plates on multiple issues, I hope this reinforces my comments to Richard. Once I did a bit of rework on the QR plates, I mounted a baby plate with a stud to to the QR plate. I abandoned the lollipop all together and now plug the stud into a grip head. This works really well, but took a little effort and cash. If you already have some grip heads, it will cost you about $25 for the QR plate from CL and another $12 for the baby plate like this:
http://www.bhphotovideo.com/c/product/67894-REG/Avenger_F805_F805_Baby_Wall_Plate.html
One more thing on the QR plates; on mine, the little knob that pulls the locking pin wasn't thread secured, so it could easily work loose. If it does, the whole locking pin could work loose and dis-inguage. If it did at a bad moment, you could crash the light = bad day. I adjusted the pin depth, and added a bit of lot-tite to the knob. Still I didn't feel I should have to do so much monkey time to make this right. This is very unlike Cool Lights in my experience.
Regards,
Grant