Might have been the cam seal behind the ignition, pretty common. Mine sweats a little oil from there, not enough to bother with.... A Ural is kinda like owning a old Guzzi, Triumph or Norton, same vintage build style, they kinda ooze oil a little from here and there, nature of the beast. I have one push rod tube that seeps a little oil since it was new. It just doesn't leak enough to pull the head and disturb things, heheh I knew this bike would be like that, it's what it is, old technology. Only thing Urals are missing is some outside oilers with banjo fittings and copper washers you have to heat up when you mess with them. Ah them were the days..............
I saw some of that "outside oil tube" action at the Sammy Miller Museum outside of London last week. Some very cool old school oil leakers there. I would have thought that Ural would have updated the seals by 2006.