I give up, know of any good mechaincs in phoenix?

[Tom]

I've tried everything. The problem is the truck runs like crap at idle and bogs when hitting the gas from idle. When its doing this crap the air/fuel ratio gauge is pegged so far lean its off the guage. I've checked voltage at the fuel pump and distributor, put a new fuel pressure regulator on, re-set carb to winter time settings, cheked all jets to make sure they werent clogged, new cap, rotor, wires and plugs, new intake, carb to intake, and carb top plate to carb body gaskets, plugged off all vaccum ports one at a time, replaced all vaccum hoses, set and checked timing 3 times, traced all wires to make sure none were pinched, cleaned out the air filter, and replaced the PCV valves. The worst part is at one point I decided F this and set the idle speed way high [well way high if it ran correctly, it was only normal 550rpm] and went for a drive. When I stoped the truck deisel'd after turning it off. I turned it back on and presto 1200rpm rock steady idle. Set the idle back down to normal 550rpm, again rock steady. Went for another drive, ran perfect. 15min later its crap again, and has stayed that way for days and over 100miles. I've tried everything, Im completley frustrated and I give up. Im actually throwing in the towel. I can't belive Im going to let someone else work on my truck, much less pay them to do it.

If anyone has anything else to check, or know of any good shops in pheonix please let me know. 70miles round trip to work without a car is brutal.