I am also loving this RR for in 1991 I rode into Breast from the Polish side and in my ride report below I shared some of the strange happenings. The armed guards "pointed" me towards the front. Also on a BMW, '79 R100RT, borrowed from a German friend.
I did not get to enjoy Breast as you did , I got lost immediately and still had to ride to Vilinus to a motel with reservations to keep the officials off my back side.
I will never forget this trip, the people, the country , it all was super mind changing.