Maybe this will help.
This is how I put the SS guide rod in my SP-01
I come in at a angle from the barrel.
I then turn the back of the guide rod with my thumb so it wiggles into the slide clearance hole. I then push it through the hole and then seat the guide rod on the barrel lug.
The photos are out of order in the procedure.
The first pic is after it’s in.
The second picture is coming in at a angle.
The third picture is the guide rod seated.
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