Where are the cables coming from down at the bb? Along the sides of it? If so you can get a clamp on cable guide to go near the top of the downtube and that's all you need to switch to brifters or bar-end shifters.
__________________
fun facts:
Psychopaths have trouble understanding abstract concepts.
"Incompetent individuals, compared with their more competent peers, will dramatically overestimate their ability and performance relative to objective criteria."