The extractor spring is an easy fix, Brownels carries the Lee Gunslinger kit fer Rossi and it's well worth the money!!!
The bulged case thing is more difficult. Two answers: Have a smith shorten the barrel and rechamber, which is going to require shortening the mag tube. Or have it rebarreled. If the gun is still under warrentee I'd return it. That bulged case thing is a sign that case failure is an imminant possibilty, which could be catastrophic!