Hi Randy. Im wondering whose choice the change was? Yours or Doc? If your getting good pain relief from the methadone why change it or add to the mix? I have been on both but methadone alone for about 10 years and like you as long as I have not missed a day or dose I pretty much get relief in under an hour,note here 10 years with this med in my system so each dose is like a booster to my already maintained system level. Just how methadone is designed.
I never got that kind of relief from the fent or any other meds we have tried. I do however dose differently than most using the clinics once a day dosing but leave myself 20mgs I can take if it beomes needed later in the day. This works best for me and my Doc allows me to do dose however works.
I do have to say that if your now taking the fent,methadone,and oxys at those doses together that you be extremely careful for even opiate tolerant folks such as we have gone to sleep on fent/meth alone and not gotten up again. Not sure from your post how your taking this combo but just wanted to express concern especially in light of the 48 hr fent dosing.
If you want to pass on a little more info maybe we can help more.
Good luck but it looks as if there really isnt a issue as everyone said go with what works and dont fix it if it isnt broke.