It's a little involved, nutty, and takes some balls, but here goes. If you have a rear seat delete, the base decal (the long decal) comes off real easy. I have two bases, one standard and one Demon. The standard just practically fell off. The Demon needed a little heat. The reason I say a little is because if you hit it too long ( which may only be a second or two too long) it cooks, shrivels and gets more entangled in the felt. That is why if your not real adept at the heat gun use a hair dryer. The two medallions on the back panel are more involved and are better stuck on. The heat only made them fuse into the felt more and I immediately stopped and went to a straight edge razor. Luckily I have a supply of NOS old American made straight razors that are as sharp as scalpel's. After cutting, at close view, you could see the "shadow" of the medallions. I then took a Nylon brush to "blend" the material to the rest. Passenger side came out better than drivers.
OK, now the visors. Definitely more involved. You heat them and peel them. Pretty straight forward but you now have a definite square of glue on the visor infused into the material....Here's where it get's nutty and ballsy. I put on some nitrile gloves, covered the dash and myself with an old thick absorbent dog blanket. Meaning I used the same large blanket for me and the dash, and just slid under while I got in the seat, covering legs and torso and seat too. I then got a fresh role of shop towels, odorless mineral spirits, and the nylon brush. I soaked the towel and "wetted" the visor then scrubbed the shit out of it with the nylon brush working in small areas. I pulled the glue out with a clean dry shop towel, sopping up glue and fluid and tossed. Repeat...repeat...repeat. This is all happening from above with mineral spirits dripping down your hands onto blanket. I spent 45 min to an hour scrubbing, and cleaning both sides. When done I sprayed and soaked the visors with Febreze and dried with shop towels. Repeat..repeat. Then I left the windows down all night. Not a hint of odor the next day.
So....that's all there is to it.