[Alemart_el_Redentor]

Well i have both Tu-4's working side to side with no issues whatsoever, other that the little payload misbehave of the "normal" Tu-4, i have UI 1.2 running on 4.09b moded and SAS buttons 2.9, my entries regarding the Tu-4's are this:

(Air.ini)
Tu-4 air.TU_4 1 r01 SUMMER
Tu-4-A air.TU_4A 1 r01 SUMMER

(Plane_ru.properties)
Tu-4 Tu-4, 1947
Tu-4-A Tu-4A, 1949

I hope this can help.