AIR/FUEL question ?

[leathal injection]

ok , my cars been running like crap lately, it felt like it was really fat, untill i pulled a couple of plugs out today,

i drove around waiting for my car to start acting up, as soon as she started hesitating i cut her off, rolled on the side of the Rd. and started pullin plug, i expected to see my plugs fouled with gas on them, i saw the oppisite , they has white carbon all over them. so im runnin lean.

ok heres my questions.....

what would make me run lean ? i thought when a MAF of o2 sensor took a dump, it always lead u to a fat condition.

i know that my baffel inside my gas tank is busted loose inside my tank, but thats been busted for years now. could that have anything to do with it ??

Will buying a A/F ratio gauge show me a lean condition if my fuel pump is goin , or if i have a couple of shitty injectors ??

i have about 15 degrees of timming into it. (i already tried putting a new distributor into it, and she still ran like shit) and about 28 psi goin throught the regulator (vaccume off)

this hesitation isnt all the time, only sometimes, when i press about 1/4 down in the gas and i start to pass 2, 3 grand.. she starts popin and hesitating. what do u guys thinnk ?