I have a Remington model 11 in 20 gauge. This gun does not always extract when cycled and sometimes the action will not close when locked open by pushing the button on the side. I bought parts from the INDY gun show years ago and replaced everything I thought could be the issue. Any guidance or anyone who still works on these, please let me know. The few Smith's Ive talked to don't work on these old auto loaders anymore. Thanks for you help.