Now am I screwed?
Not necessarily. It does explain your sticking valve though. Button it up and see what she does.
Sooooo hereso what I believed has happened.
Lkq is a recyclers not a rebuild er.
Lkq also like any other recyclers will drain fluids and usually pull filter. Then they attach a tag that says the transfer has no fluid to let the installer know they need to do a filter and fluid which issue standard procedure if using a scrap yard transfer.
Whoever put is still in royally buffed up and got it bolted in....overfilled so is set picked up fluid and sent it off for some one to buy