How do you remove the dashboard air vents?
This video explains it perfectly, and the process is the same for 599 and 612 dash vents. I purchased these fish de-hookers from Amazon, https://www.amazon.com/gp/product/B0B4TDMJ87/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 which came in a 3-pack. You do have to supply some force to remove the vents, but they will pop-out without damage. It's a simple push-fit to reinstall them. I hope this helps.