Mine will still keep trying to accelerate if I keep my foot in it. However, out of fear of damaging something, I back off. I suppose if my wastegate actuator (vacuum pod) isn't working properly, that could cause the issue too, right?

I still have a Garret Turbo kicking around from my old Turbo Lebaron. I converted my Lebaron to TII, however I used the smaller Mitsubishi Turbo, packed this Garret up and put it aside. Worst case scenario, I can grab some parts off it.