In emailing with Dickinson Arms I was referred to PISCO - they are in Oregon (PISCO - Home) They were able to sell me 2 mainsprings. I had hoped to pick up a few more just in case but apparently the factory in Turkey didn't share too many. Springs were $25 each. It was very easy to just pop the new one in - hammer works again.
I also now noticed that the shells don't spring out as they do on the other shotgun - so i'll need to see what else needs to be replaced - but for now - it will work fine. I will just need to pull the shells out - but not a problem as i'm not in a hurry when i use it anyway.
Just thought i would share the info. Good luck.