I went to remove my mobo from my case to realign it with io shield and 2 of the mobo screws wouldn’t unscrew,they could screw in and out but it wouldn’t come off of the board,after screwing for a bit I noticed that the board could lift up and that the stand off screws came off,I tried to take pliers to hold the stand offs while I try to screw it but it doesn’t work and it seems to be stuck to the screw.How do I go about fixing this?I put the mobo back into the case and it is fine but how will I take the stand offs off if I want to upgrade in the future?