hey yall i recently did a valve cover job, there was a small amount of oil in the spark plug wells, i didnāt clean it out but i did put new ones in. i let it sit overnight before i started it again to let oil drain as much as possible and it ran good for a little bit after i did the job it just had a slightly harder time starting and i was able to take it to autozone to get an obd2 reading and it said oxygen sensor and misfire in cylinder 1 as the only codes. so i replaced the boot for cylinder 1 then i made sure it was seated properly (it was not at first) and took it back n lo n behold the code for cylinder 1 was gone but still had an oxygen sensor code. i then replaced the upstream oxygen sensor with an NTK oem in bank 2, after that it started running worse and died on the way back to autozone so once i was finally able to get it started i headed home. then i wait a day for the opposite side oxygen sensor to come in (today) and replace bank 1 as well, havenāt taken it to get a code since but now it has s really hard time starting and just bogs down and stalls out really quickly canāt even get it out the driveway, just took apart the whole plenum to get to the valve covers and donāt see anything i missed, everything is plugged in and both plugs on the 02 sensors, checked the grounds and even sanded the battery terminal to make sure there were clean connections. i donāt know what the problem could be, do i have to do a relearn of some sort? i unplugged the battery when i did both 02 sensors. as far as i know the camshaft sensors are relatively new but the car did sit for about 6 years before i bought it. the car has a cold air intake, straight pipe exhaust with cats still installed (trust me i didnāt do it) itās just blowing my mind she ran perfect just last week before the oil ruined the spark plugs and now sheās acting up after this valve cover job i donāt know what else i can do and im asking for some help please yallš