Given your experience and the 27-year age of your fuel pump, replacement is wise preventive maintenance. Most RV owners report good results with quality aftermarket pumps from reputable suppliers.
Running generator twice daily for residential fridge in Phoenix heat is normal, not battery failure. Residential fridges use 1.5-3 kWh daily in heat, exceeding typical AGM bank capacity. Your April 2024 batteries are still new - this is expected usage.
$1400 for Triton V10 AC evaporator, dryer, and expansion valve is a fair price. Parts are $300-500, and 8 hours labor at shop rates is accurate for this dash-intensive repair.
The AC dash fuse in a 1997 Pace Arrow on F53 chassis is typically located in the under-hood fuse box, usually labeled as 'A/C CLUTCH' or 'HVAC' and is commonly a 10-30 amp fuse. Check your owner's manual or fuse box cover diagram for exact location and amperage.
Given your situation with the problematic Atwood Level Legs on your '06 Pace Arrow 38L, you should keep them and sell the parts yourself - they're worth significantly more than what BigFoot would credit you.
Blinking LED on zone AC control board indicates fault. Zone 2 steady green means its working. Try swapping boards to confirm zone 1 board failure, then replace if confirmed.
Tie rod end replacement requires puller and alignment afterward. Count turns when removing to approximate position. Always verify with alignment.