I sometimes drink more of methadone syrup and pop more klonazepam along it (although I'm getting off 'done... whatever). The next day I may have some headache and feel like shit with my back aching and things but that's because I simply end up nodding out on an armchair and sleep there the whole night. Can't say for morphine/heroin/hydromorphone/oxymorphone/anything 4,5-epoxymorphinan/morphinan. I remember my first shot. And did I do some major breaks? Hmmm, I don't think so. Once, only once, 1 month and a half, something like that but when I started one day and it wasn't "one high" and stop. But concerning taking sometimes more methadone than needed, it's alright because I've got stuff at least for the following week (actually I always keep reserve for like 10 days, I guess this is because I know how methadone withdrawal is shitty so I always stock up). I hate withdrawals, those after being on morphine/heroin/hydromorphone/whatever short-lasting are crazy, I got paranoid once. From then I always had something to kill my pain. And if I run out of methadone now (shit happens), I still have some bupe for like 3 days maybe, that's enough to find something... Anyway I don't want to go back on morphine or heroin. I remember those times, concerning my addiction, they were shitty, at some point I just felt like I was nothing. I shot up so many times a day I had to do it at school at least once.
I don't know how much you get for 10$ in Detroit. (Guess one hit which would be 0.25g / 0.009oz for you if you've got some tolerance or just 0.1g / 0.0036oz... Actually, you really measure bags like that? I mean "a dime bag"? How do you know how much should be there?).
There was a saying here which rhymed "who doesn't make breaks loses quickly nerves". I don't agree, doing like 3-day binges then making a break for 3 days and again binging for 3 days... - this means withdrawals in no time. I didn't have (....) to live in one apartment with like 10 junkies (this probably also happens in the U.S., the name in my language comes from English "squad", but if you don't know what I mean, see a bunch of junkies living in one apartment in "Trainspotting"). I got to know many heroin junkies when I did morphine and many more when I had to do heroin because there was no morphine around, including wholesalers. 'Twas a nice time when I think of all those parties and other things, I guess shooting up was for a long time in some shadow for me, years passed before I realized it's a dead end I can't go any further.