Would anybody know for sure the size and thread pitch of the lower mounting bracket for the rack on this bike? I know that a M5 x .8 has lots of free-play, and I am not sure about an M6 (I tried one, but it did not seem to start threading, maybe due to the thick coat of paiint?).

The racks are not currently available in Canada, though they are in the US at this time, but we cannot order from the US website. Either I wait patiently that a rack becomes available this side of the border, or I try to fit something from a third party. Any suggestions in this regard, other than what has been posted here before?

Thanks!