Grip Frame Change - I'm Stuck

[jussbad]

I removed a New Model XR3-Red style Stainless Grip Frame from a Single-Six. I was replacing with a New Model Single Six Grip Frame XR3 style. The only difference I see in these two grip frames is the Newer one does not have the locating ears that go into the back of the cylinder frame. The new style does not have these thus they use the new style grips that do not require the notch in the grip panels.
So, the problem is with the grip frame bolted up the gun will not cock all the way back. Any ideas? Does not appear to be a "jamming or rubbing" issue on the moving parts. Thanks

 

[xtratoy]

Hammer strut in backwards?

 

[jussbad]

Hammer strut in backwards?

No. Checked and in correctly.

 

[eric conrad]

Could be the pawl. Some NM grip frames had a cut in the grip frame for the pawl. Does the pawl have a hump on the end? Maybe Jim (Hondo) Will be by soon.
Eric

 

[Chuck 100 yd]

The rear face of the hammer may be contacting the grip frame before the trigger sear can drop into the sear notch? Also ,check to make sure the spring coils are not stacking up solid and have no more give.

 

[jussbad]

Hondo helped me out. Was getting coil bind on the hammer strut. Put another strut with a bit shorter spring and all good now. A great group of guys here. Thanks much

Gary