Got the car back today.
Photos show the gas hose was just cooked by the EGR valve and cracked open. Four circumferential cracks show as the hose is bent.
The gas hose markings indicate that this hose was added by Alpine during the S/C install. This is after about 18 months of driving.
Next, I will replace the hose again, but with teflon lined, silicone, and metal braided hose. At least I now know exactly what is required to fix.
I do not know why I would have an especially hot condition as compaired to other S/C installation.
Tone, do you see anything unusual?
Roy