Minolta Hi-Matic 7s back focus on infinity

[e_asphyx]

I first noticed it on a film then checked using a ground glass. It misses focus on all distances including infinity. The rangefinder seems to be aligned properly. Is there any internal adjustment for that? Maybe helicoid can be turned a bit? I may try to add some shims under the lens board but I want to make sure that there is no other way. There is no repair guide available online for 7/7s/9 series

 

[e_asphyx]

I found a very detailed instruction in Japanese: https://mglss.rakugan.com/Minolta_HI-MATIC_7/repair/ It shows helicoid locking screws

 

[MDenton]

If all else fails, there are very active Minolta groups on Facebook.
They might be able to help.

 

[e_asphyx]

If all else fails, there are very active Minolta groups on Facebook.
They might be able to help.

I managed to get to helicoid adjustment screws following the instruction from the link above