Long distance diagnosis is always sketchy, so lots of questions…
Is it always the same two chambers that have light strikes?
Have you tried different brands of ammo?
When you say that the Wilson spring fails to stay in place, what exactly is happening?
Has the strain screw been altered?
What is the gap between the cylinder and the rear face of the opening in the frame? (Proper name for that is rear gauge or headspace)
How far does the firing pin stick out when the hammer is down with the trigger held back? Put a dime next to it and take a picture for us…
Is it always the same two chambers that have light strikes?
Have you tried different brands of ammo?
When you say that the Wilson spring fails to stay in place, what exactly is happening?
Has the strain screw been altered?
What is the gap between the cylinder and the rear face of the opening in the frame? (Proper name for that is rear gauge or headspace)
How far does the firing pin stick out when the hammer is down with the trigger held back? Put a dime next to it and take a picture for us…