Melena has a 2nd generation R65 ('81-'84), so she should not have the "coat hanger" set-up that the early bikes had. BMW upgraded in 1981 to a ball & socket connector, I believe.
Quite honestly, I never had a problem with mine, and it was with reluctance that I installed Justin's.
I like Justin's, but I believe the 1st gen. shift linkage could be fine on a one-owner bike that was babied (garaged) all it's life.