If you
use pop rivets, don't ignore Finn's advice like I did <g>.
Either use a lot of aluminum rivets, or use stainless in a lesser
quantity. My oil cooler is fine with lots of aluminum rivets, but the
water coolers get a lot more shaking and abuse. I actually have fewer
rivets in them, and they're also aluminum. So far, I've lost about 4-5
rivet heads from those, so I'll be converting them to stainless as they
break. I will probably add some more as well. I also believe Finn
used some epoxy between the support and the core, which I now believe
would have been a good idea. Live and learn (to trust Finn) :-)