2005 Honda Element – intermittent flooding?

My honda 2.4 will be working fine, then for some reason will die and become hard to start. I will eventually start and run poorly/have to feather the throttle to keep it running for 10 minutes or so…then it will clear up and may not occur again for several days OR may do it again in 10 minutes!!!!!

so far have done/checked the following:

new fuel pump and screens.
changed fuel injectors.
checked compression – 150-155 across all 4
checked fuel pressure – 42 lbs
checked plugs – appear to be wet

only code I’m getting is a PO325 – knock sensor