yes, it is a DA hang-up. the SA is fine, hammer -pulls back to engage the sear freely and locks firmly, releases crisply when the trigger is squeezed. seems pefectly safe to shoot in SA, and the strain screw is tight enuff there is no interference of the 'hook' of the mainspring and the underside of the hammer.
it seems that the trigger is hitting the edge of 'secondary hammer catch' or the DA catch just barely, I'm not sure what it's called. the DA sear is traveling fine it seems, not sticking at all. I backed off the strain screw a good bit and it seems to help the problem but backing off too far off course and lthe 'hook' makes contact with the underside of the hammer.
the hand and star seem fine I'm almost certain that is not the problem as well as the cyl lock travel
thanks for any tips.
I checked 'old west gunsmith' site and looked over the schematic of the revolver and parts so at least I'm aware of the parts of the actiob