I have an old Ithaca model 37, that I replaced a broken forend tube assembly on. (#44 in schematic) the action is as slick as anything I've ever felt, until I put the barrel back on. Then the action gets stiff and tight. What am I missing?
http://www.e-gunparts.com/products_new.asp?CatID=5422
http://www.e-gunparts.com/products_new.asp?CatID=5422