For the angle adapter, I suggest changing the mounting holes to be 12:00/6:00 instead of 3:00/9:00. The steering wheel already attaches at 3:00/9:00 so there isn't a way to mount at exactly 3:00/9:00 like 99.99999% of folks who use the angle adapter. The wheel needs to be slightly rotated. It's not a big adjustment. Just seems like a better way of doing this.
