Would a clogged fuel pump sock cause a lean condition at WOT? My logger is showing ft trims in the 81% range for LT/HT goes up to the 90% range when I turn the blower on heat/ac. LT goes back to 81.2% (too much fuel idk fp@37psi base?) 96% for MT. Car has 880cc fic injectors, Keydiver ecu (for my setup), aeromotive afpr (-6 holds pressure fine), Walbro 255 rewired (verified 12v at the fuel pump already) aem wideband (11.4-11.5 at WOT) new fuel filter and a brand new optima red top 880cc tested under load, also still puts out 14v+ under load according to my logger . Problem is after doing a compression test/check 2 cylinders are down a bit.The car doesn't smoke anymore under boost or idle(fixed small boost leak). So as far as I can tell except for the walbro sock which I cant get to because the damn fuel tank studs are rusted and I don't want to break them. All the fuel related components seem to be ok. For some reason I cant get my fuel trims stabilized either and after looking at my spark plugs it seems that I'm running a bit lean. O2 trims look normal under low to partial throttle swings all the way up to.85v under WOT the O2 voltage rarely goes pass .78v-.80v and 5-14 counts of knock if I'm in it.I tried turning up the fp but it wont go any richer and it was running a little hot until I changed the tstat. Btw my tailpipe is sooty black. Any ideas???? Sorry for the long post but I am at my wits and it doesn't add up. Rich at the tailpipe,lean at the spark plugs,logger all over the place I'm lost please help. Sorry for the long post...