Right Barrel Miss firing on a Reproduction 20 Gauge

[JoelShep]

I bought a two barrel set Parker Repro 20 gauge this past Spring. It had been fired little if at all prior to my purchase. I am new to SxSs but wanted to get one since I am a traditionalist and I just love the Parkers. I will hunt mine for grouse and woodcock, so I chose the Repro.

As many can attest, there is an adjustment of going from a Ruger Red Label to this gun. After many rounds and a two day stint at the Orvis shooting school (excellent instruction), I noticed the right barrel ejector was not really ejecting the shells. In fact the gun miss fired 5 or 6 times, in the right barrel, during the class. I could hear and feel the firing pin fire, but it was not strong enough to ignite the primer.

I have since noticed that when I load snap caps in the gun the right barrel snap cap rarely ejects in EITHER barrel set. I spoke to a gun smith in the Boston area and he says I wore out the spring on the right side of the gun. Here are my questions:

Is this most likely the problem? Is it easy to fix by most gun smiths?

I have fired probably around 750 rounds through the gun most of which were fired in the right barrel. Does this practice cause undue wear on the gun? In other words, should I use both barrels on a more equal basis?

Thanks for any reply