I used «5 minute epoxy» from Cdn Tire; comes in a dual syringe packaging, so you're getting the right quantity of epoxy & hardener. First time I've used this, and it was pretty easy.
For preparation, I sanded/dremeled the plastic part to make the surface rough. Applied the epoxy on the two parts (Carbon Fiber & plastic), then clamped everything together with plastic spring and ratchet clamps (I also noticed that the top end tended to separate, so I clamped that part first), put a bunch of books on top to maintain pressure and let it cure for four hours per side.
They've been on for two weeks now, and they look good (I find that mine are a little too thick too. Looks good, but doesn't look stock). I'll let you know if/when they fall off...
