Got my crossbreed about a week ago. The retention is not tight enough for my liking. Right with the holster they sent me directions for tighten / loosening using a hairdryer. I tried this this morning to no avail. I held the hairdryer over the trigger guard for a good 5 - 10 minutes. I did not feel any pliability in the kydex. My G23 was hot as hell though (even with a wet rag over it as per the directions.) Anybody have any advice? Did I just call it quits too soon?