YS640 Leaks Smoke

I have the YS640S, which I purchased in June of this year. I have about 30 cooks on it now, and recently the cooker started leaking smoke from around the hopper and the grease drip port, as well as around the smokestack. The inner fan is working, but as a result of the leakage, I'm losing efficient air flow across the cooker and out the smoke stack.
Looking for help here. Has anyone experienced this as well? Please see the attached videos.
Thanks for any input, Rick
Looking for help here. Has anyone experienced this as well? Please see the attached videos.
Thanks for any input, Rick