I want to say they had some quality control issues on some of the batches. I'm not sure how long ago that was,or if I'm even right about that.
I had the issue you were talking about with Grizzly instincts,and spun them while cooling them off to set them,and it worked. Part of it for me also was too much glue and it couldn't get out with the air also. I have some Zephys that have a hole in the ferrule,and that helps a lot with the air getting out.
I bought some Woodsman off the classifieds,but haven't mounted them yet. Ya got me curious now!