I too have the same issue with my Minilites…..
I purchased my wheels directly from Minilite in 2018. The wheels were shipped with machined bushings that fit in the wheel center. I later became aware that RD Enterprises,
http://www.rdent.com, also markets Minilite wheels, I contacted Ray and described my issue.
Ray noted that the wheels that he stocked provided ample clearance for the KO 3 Ear Nut tool to clear the spokes. We both assumed that my bushing rings must have been machined differently. Ray was kind enough to lend me one of his bushings for comparison.
I found that my OEM bushing rings were machined exactly like the sample that Ray sent …BUT the center of my wheels were machined deeper than the wheels in the RD Ent. catalog…the face of my rings are .125” Below the face of the wheel while the RD Ent. appear to be approximately .25” PROUD of the face of the wheel.
Ray also mentioned that he was aware of "Nader Safety" 3 Ear KO nuts. Ray emailed me a dimensioned photograph of a KO Spinner that he stocked. I found that my KO's Ear clearance to the base was .70” while Ray's was 1.125”.
So...... the ears of my KO Nuts are very tight to the Wheel spokes and unfortunately do not allow me to use the spanner to tighten the nuts. I plan to eventually have new bushing machined to solve the issue.
Attached are pics of my the Bushing Rings in relationship to the Wheel....
Rob.