There may be some fitting involved with the 1911 even with the factory sear. I noticed several early 2240 2-screw frames had slight differences in the location and diameter of pin and screw bosses, etc.
The 3-screw frames "seem" be be more consistent.
Some filing, grinding, welding, hacksawing, a bit of chewing gum and some vasoline or K-Y might be required on parts (and/or people) designed without consideration of other related enhancements!
I sent 2 triggers, so you have a "control" and a trial part.
P.S. It's freezing and raining here ... been outside all day. I'm whupped.
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