I've said it before but the guy here https://www.fotonaprawa.pl has repaired a Ricoh GR1, Ricoh GRll and a Fuji GA645 for us. All with shutter problems so a new ribbon cable was needed. Which it seems to also be common on contaxs ( had a TVS repaired by another person ) so if you have some broken T2s it's worth checking with them.
My issue with my current T2 is that in certain points when shooting in sun or high brightness it gives a light ring on some photos not all but some and that's the seals falling to bits inside. So far no one has been able to fix it, might shoot your man a message.
I've said it before but the guy here https://www.fotonaprawa.pl has repaired a Ricoh GR1, Ricoh GRll and a Fuji GA645 for us. All with shutter problems so a new ribbon cable was needed. Which it seems to also be common on contaxs ( had a TVS repaired by another person ) so if you have some broken T2s it's worth checking with them.