8 weeks on Phera is really testing your livers patience. If anything I would switch that up with TRN for 8 instead as it isnt methylated. hope your post cycle therapy is in order, thats a long cycle. As for running xfactor as part of your post cycle therapy, youd b better off with Powerfull of Activate, that way you could continue to take in healthy fats like Sesamin and Fish Oil to restore your lipid profile which will surely take a beating off such a long cycle
ps, if you cant gain 15 pounds in the first 30 days, 8 weeks wont do it for you either