Hey John,
That is the combination spring. The long side can be very slightly tapered just to help keep it from touching the frame. That is the trigger return and you need all the tension you can get from it. The short side is the bolt spring and you can taper it quite a bit. The bolt only needs 3-4 lbs to do its job. Any more than that will cause unnecessary wear to the bolt arm, cam and cylinder. I recommend putting a thin washer under the spring to help with easing the tension over all, then respective tensions can be "dialed " in.
The trigger sear is what i was saying needs to be rounded (if that is what you were referring to). The sear is the part that engages the notches on the hammer. Sometimes it will interfere with the left arm of the bolt. I recommend rounding the top corner that would be next to the arm when installed (the upper right corner (as installed)). If you look at these parts as mounted, you can see that they rub against each other.
I'll try another setting for taking pics, mine have way to much info for most forums.
If you will p.m. me your number I'll call you.
Mike
www.goonsgunworks.com Follow me on Instagram @ goonsgunworks