could you post a pic of your gun and sight.
My 945-1 (sold)
had the wave pattern slide cut and came with 3 dot sights and the rear was the adjustable wilson.
me personally, I am not a fan of three dot so I purchased a tall front black post for the front and wilson combat made a target rear blade with a .110" notch. I called wilson and they told me how to remove and it went on easy. I dont recall the process.
when I sold my 945-1, I put the original sights back on. I did use a sight tool for 3rd gen smiths for the front and IIRC, I had trouble with the sight tool due to the serrations were near the dovetail when caused some issues and the sight was tight.
I would call SW PC first and see if they have the dot front and rear blade for you. if you dont have access to tools, you might be able to just send you slide to SW and they can install for you.
or call wilson combat and speak with tech. the few times I have called them, they have been most helpful.
good luck