Do you guys find that the collet and what ever cutting bit you have in it at the time doesn't want to come out? I've found this to be the case no matter which size collet/bits I'm using, when it comes time to change the bit, there's no way that I can pull the bit or collet for that matter out by hand. I keep all the collets and bits clean, stored in cases so dirt etc isn't the issue.
Is that groove around the collet there for a C spanner or similar to help aid with removal of the collet??