Yep, the tubing I used is food-safe to something like 400F, and at 50% of 60 watts there's no way it's getting anywhere near that. The SSV heater cover comes with a thin metal shim, and that acts as a bit of a heat shield too (see pics).
If you get the screw length set right, the bracket drilled out properly, and the heating element low enough in the handle the heater cover won't slip at all - but this part is tricky! I hope I'm not making it look easier than it is. Henn, correct me if I'm wrong, but you weren't able to get this part set up 100% right?
Oh and I don't really have time to be selling these things (not sure how 7th floor would like that anyway, can't imagine they're making much money on the spare parts), but hit me up with any questions if any of you try this.
Edit - jx80, I just happened to find the temp controller on etsy via a google search for $10 + $5 shipping. All it is is a rheostat in a box so if you have minimal electronics skills you could probably make the same thing for like $5 really, just figure out which rheostat you need, wire it up, and find an appropriate enclosure.