The ejector hammer could be worn where it contacts the hardened plate. The ejector stem that cocks the ejector could be worn slightly short or the tip may have broken off.
Heavy springs could easily cause excess wear and strain on the parts. The ejector stems could break from the strain of cocking the ejector and the forend loop could come loose from the barrels. The springs are housed in a box and are easily swapped out. Try lighter springs and you may need to carefully stone the contact surfaces of the ejector hammer to square things up. It makes sense that the right ejector has the most wear. Go slowly and carefully. It is all delicate work and you need to proceed slowly. Be prepared to take it all apart again and again. Don't worry about the timing until you have the ejector cocking again. The timing is adjusted where the trigger box extension contacts the ejector trip protruding from the knuckle. The ejectors must fire at exactly the same time. If you are not used to this type of work, find someone who understands how it all works.
