Tom, I think the standard spring will work.  The second sear on the trigger turns independently of the primary trigger sear, and really doesn't need a spring as far as I can tell.   I didn't experiment with it exhaustively though, to see if it's needed for some operation I didn't comprehend.  

I made a special spring that operates both sears on a NY Contract a few weeks ago for George Babits, you can ask him how well it works.  

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The NY contract action has a special sear that drops the hammer to half cock when the breech block is closed.  Because of that, it needs a split trigger, so when the closing block trips one sear, the other catches the half cock notch.  

If a standard spring doesn't work, I can make you up one of the special ones. 

Tom and Dave,

It works great!!!  Really got the trigger pull down to managable.  If I remember right, the little spring Dave made for me bears on both the safetuy sear and the trigger.   Whatever, it definately did the trick on my NY carbine.

Thanks Dave.

George

Looks like a great solution to me!  Tom