Just keep in mind the fent will likely blow your tolerance out of the water.
Once your OPs come back around there is a good chance your tolerance will be so fucking high that you may never go back to the legit meds, unless you’re eating handfuls of the op 40s at time, which isn’t likely sustainable.
Just food for thought.
This is exactly how I ended up doing 1-2 buns a day of fent before I cleaned my act up.
My plug for real heroin fell off for a bit so I had to search out new material. Once I did a few bags of fent, even the best heroin in the world wouldn’t keep me well.
Good luck
Always, fair winds and following seas