Thanks. I discovered that heating just the housing to remove the small pieces is a waste of time. It doesn't retain heat at all without the lens in place so 7 mins in the oven and it's toasty, but that only gives you 1-2 minutes of work time because it cools too fast.
I also decided that scraping the channel with a flat head is the best way to remove what's left, yea it removes a bit of the housing plastic but it's so much faster once the big pieces are gone.
Going to break for lunch, then start working on aiming the projector.
You really need to just use a heat gun, no way around it for clearing the channel. My expensive milwaukee heat gun paid for itself this weekend.
When aiming the projectors, if I had to do it again, I would have used a laser to check left and right alignment. Basically point it in the exact direction the projector should be and then determine if it's "good enough" or worth taking the time to shim left or right. I skipped this step and it kept me up at night. Driving it the first time at night I looked like this because I couldn't tell if they were dead on or pointing outwards.
Also, when you go to bake them closed, get them good and hot. I really like using the heat gun because it brings the temp up slowly, like one degree a minute, and then once it hits say 200F count to about 8-10 minutes. You have to shove the lens in at an angle and it's a real pain if the butyl is even remotely stiff.