SoCalShooter69

Ream your barrel. Cross-posting subforums won't solve your problem.

You can't compare hammer spring weights against different brands. PD springs are true weights. Other brands are not. Additionally, if you're talking about an S2, have you had your barrel reamed? A 12# PD spring should be 100% with Winns. You're gun isn't tuned properly.

You can run it with the wing. The wing is only for DA action, but won't give you any issue if you run it in SA, with a one piece sear. The stock sear on FPB guns (Tanfos and CZ's) do not allow an oversized disconnector to fit under the sear cage.

Both of you are correct, although the nose of the bolo rubbing is more of a difference in frame tollerance, than it is parts. Just the same as how some hammer spring pockets are shallower than others.

Exactly - This would be the proper way to go. Completely remove pre-travel screw, and fit a bolo/titan/(1piece sear if it does not already have one). The previous issue was guys were trying this with the pre-travel screw still in - you ned to remove it, if you use a bolo (in this specific case). Edit: to the original question - this is the mod if using the DA trigger, as well.