Just got off the phone with Courtesy Isuzu.

- No budging on the hood insert. They claim it's a design flaw.
- No budging on the window fix. They claim it's a design flaw.
- No budging on the Air Filter - They claim that the oil from the K&N air filter dripped into the mass air flow sensor (I misunderstood the correct name) and shorted some of the wires. They're not sure it will fix the problem, but they still recommend an Isuzu air filter and a replacement of the mass air flow sensor. This is what's causing the low idle problem (possibly).

That's about it. I'm going to get the oil changed and do the rest myself. Hope this helps someone.