Modification of TkLinuxCNC gui

I’ve been using EMC since the beginning, now Linux CNC, for a long time without problems. I’ve been using TkEMC GUI, now TkLinuxCNC. I use TkEMC because it is faster (I don’t need accelerated graphics), it is ergonomical and has everything I need. However, in the latest version of LinuxCNC a change has happened which I’ve noticed after an update – the feed override slider no longer changes G1 and G0 as it did before, but only G1, it does not change G0 which makes setting up the machine problematic. The GUI Axis has two sliders, so that’s not a problem, but I can not easily run script Set_Coordinates with it.
Because of that, I’ll need to edit TKLinuxCNC to have the feed override slider the same function as before (as in version 2.6 for example, setting both G0 and G1) or two sliders as Axis has.
Thanks