I had good luck with the B1 as well, but you do need to put a little grind on the teeth and at the front to make it work.
'10 Ural Gear-Up (другая женщина the "Other Woman")
K&N Air Filter, Gossie Needles, 127.5/42 Jets, past 20K km and running strong. Someone stole my cats.
What broke and needed fixing: speedometer gear, hack stub shaft.
"Ride today, because you don't know what tomorrow brings"