If memory serves me correct you will need to push (extend the development time to get great results) I managed a E6 labs in the late 80;s and this was common.
You should do a ring around, normal, under , over,
Then as the lab to clip test , Normal, push 1 , push 2 push 3 push 4.
This will cost you a bit but you will get results.
If you are processing yourself then I would use whole rolls with ring around experiments.
Very lovely results can be had,,,,, each film has its own look so first off I would get the exposure dev correct .
then move onto new films.

have fun