Dynafit TLT Comfort parts?

Hi folks. Does anyone know where I can buy Dynafit TLT Comfort binding parts? I've broken the plastic heel riser on my '07 bindings and can't seem to locate anything on-line. I'll be traveling south of the border to do some climbing in Washington in a few weeks and thought that REI would surely sell this sort of thing, but no luck on their web site.

Thanks.

You can e-mail dynafit directly at info@dynafit.us. That's Salewa North America. you can also phone 303-444-0446. I've had good experiences with their customer service.

Salewa mailed me a couple of them after a phone call. Arrived within days.

Make sure to read wildsnow's disassembly instructions to avoid springs flying and sripping threads.

Yes beware, the dreaded exploding heel binding syndrome.
I did not read how to do it and learnt the hard way.
You need to back of the DIN setting all the way before you take off the top plate.
I also had to buy a little ratchet to enable me to screw the volcano on from below.
It's easy but I am mechanicaly inept.

Man, I took that top plate off of a friend's ski in a hut in BC, to replace the volcano. I'm still amazed that I found all the parts.

Excellent information folks. Thanks so much for the quick responses.