Jim
remove the forend iron from the wood, soak the forend iron in mineral spirits or other solvent of your choice, spray out the springs and guides with compressed air, relube. Do the same to the barrel ejectors. Check the ejectors for freedom of movement.
Dan,
it's interesting about your comment on coil springs taking a set. While driving up to hunt yesterday, my friend related an experience with a Spanish sidelock with flat/hatpin springs and commented about leaving them cocked. Leaving any of them under stress isn't good, some take it better than others, IMO.