I have the complete how to on this. I have been using MY 3d touch with my version of a Maker bot MK 6 nozzle. I had the same issue with my 3d touch hot end.
They just wear out and drift all over the place. is a combination of a few issues.
I will write up a how to convert and supply photos.
The 3D Touch is still a far better printer than it's replacement the CubeX. I have both printers and with all the modification on the CubeX the 3D touch still out prints the
CubeX.
I have them sometime printing the same object side by side. always 3D touch wins hands down. The only reason for it is the the touch run 3 mm filament and keep better hot end feed rate because of the filament drive system. all this talk about moving all that mass of aluminium around is rubbish.