P0441,P0455 Code, What else to inspect?

My truck has been throwing the p0456,0441,0455 codes for the last few weeks.
I changed the gas cap with OEM but that did not help.
I did the smoke test and found a small leak in the canister.
I replaced the charcoal canister, purge valve and the vacume hoses.
The fuel pump was changed last year and the o ring was fine. It is believed that while changing the fuel pump, the o ring should also be changed cause it has a tendency to tear/crack. The tank was lowered and the o ring was intact.
Cleared the codes and they came back after 2 days. No smell of fuel from anywhere. Appears to be running fine.
I currently have 0455 and 0441.
I am not sure if I have a leak so small that I am unable to detect. Maybe a pinched/cut wire or hose.
Any idea what direction I should be looking at, my patience is wearing thin on this. Don't want to keep replacing parts anymore.
TIA