I've recently inherited 2 Remington 11-48 12 gauges. One of them began hanging up upon ejection a few years ago and has progessively become worse. I have completely disassembled both, cleaned all parts/mechanisms, applied a light lubricant to the tube which the spring covers, yet one of them still cannot fire without the empty cartridge hanging up halfway out the ejection opening. It hangs up 100% regardless of load being fired (even high brass.) Could the spring simply be worn out? If so, is this a part regularly available? If not the spring what are other possibilities? I would appreciate any suggestions/advice.