I also used the 1025, simply because I've been using them for 45 years, and am comfortable with them. If you need even more clearance, the 1025 screw hole can be countersunk with a 3/32 bit, spun by hand, and a flathead screw will seat very nicely.
I found that out when I started installing 100-ton trucks. The axles sit higher, and if the mounting screw is directly above the axle, the axle rubs on the standard MT screws. Filing the screw head down works, but that makes it hard to remove coupler if it breaks.