Hard start after re-fueling/hot weather, 2003 2.7

Wondering if anyone could shed some light on a problem I have been having recently with my 2003 2.7. I have trouble starting the truck anytime I refuel and on hot days (above ~80º). I have to keep the truck turning over for quite a while in order to get it to start. Once it starts it spits and sputters for a minute or two and then it runs fine. No other issues, runs flawlessly aside from the initial start up. Almost acts like it's flooded. I have tried replacing the vacuum switching valve with no improvement.
Check engine light is on intermittently with codes:
P0171 = lean bank 1
P0441 =evaporative emission control system incorrect purge

Any help would be greatly appreciated.