I have been using Xtol and Tri-x at box speed a lot with no issues. Said rolls of Tri-x were run through my Nikon FM, no challenges in terms of exposures. Now here is my problem, the last two rolls of Plus-x 125 I ran through the same Nikon FM came out over exposed save for a few frames. I rated the film at box speed and processed in Xtol 1+1 at 8.25 min. I have used Fomapan 200 rated at 125 ISO and processed in Rodinal with no problems with the same said FM and I have made some great prints from that roll. So is it a combo of Plus X and Xtol 1+1 not playing well together, should I just go with D-76 or HC110?