PST Conversion kit weekend help

I tried calling but unfortunately they are closed. I did modify the post because I haven’t personally talked with anyone and will respect them as a company until then, but our trusted shop did contact them and kept getting told they’ll have to modify to make them work. I’m hoping to get further with them Monday. Pictures below.

I wonder if you got sent the wrong kit.... I've never heard of anyone having to machine any brake kits like that.

I have and for that exact problem, but I don't remember what they did about it.
It was posted on here before.
It does seem that the high unmachined ridge had to be turned down, but I'll do some research and see if I can find out.
Be back in a bit.

Well unfortunately I can't find anything about it online and it seems our search function on here doesn't work right now so I can search for it here.
James at PST posts on here frequently, so maybe he'll see this.