I used to buy a bit of tape from 3M and they make several good adhesive tapes that would work for the shields.
Here is a 3M Page that lists their 890X series that seems as if it would do a good job in hotter climates. The spec does not talk about temps under 70F but I would think that a silicone adhesive would handle just about anything to under freezing.
The spec is in this PDF. McMaster-Carr is a great place to find tapes and also get FREE SAMPLES if you ask nice.
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Black 2003 H2 - Just like most of yours, just possibly with less crap bolted on.
My job:
http://www.HardOCP.com