Had to do the same to get it even close with the Radial clip ins (22mm tyres). Still tweaking to avoid it rubbing.
I’m still not having any luck making the holes bigger.
Files and drills don’t seem to touch them! :(
Drill from a (battery-powered) drill had minimal effect, one of my files did ok... could always cut a v with a hacksaw, then file it out? It's a total pain, I know.
@B16Lee started
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Had to do the same to get it even close with the Radial clip ins (22mm tyres). Still tweaking to avoid it rubbing.