My Deer Creek (Old CVA Mountain Rifle parts) has the same problem. I have lost several of those springs, and finally decided that, what the heck, it shoots just fine with the front trigger. I dry fire every evening for practice and just to fondle my sweetie and the parts have worn in so the trigger pull is actually quite light. Lighter than on my T-C single trigger with L&R lock. I recently put a different trigger guard on so there is more room for my fingers, and it negates the rear trigger so now it is also a single trigger rifle.
~WH~