It's incredibly bizarre to receive crushed bars, definitely hit this with a fent strip and probably Shulgin climb the dosing if you can. I've been sold "crushed pills" once, allegedly a hundred but it added up to ~975mg iirc. I found that really odd, so I volumetrically liquid dosed it in PG and found it was essentially fucking pure, with 2-3mg knocking people in minutes. Pretty sure it was pure alp, this occurred around 2018-2019 I believe.
Once I received a bag of 4F-Methylphenidate, and I didn't think about the fact that, unlike the normal Ritalin I was used to receiving, this shit was pure crystal. Out of habit and like I typically would with crushed Ritalin IR, I did a bump off the tip of my pocket knife, and the almost serotonergic feeling lightning bolt that shot up my nose indicated having made an insane mistake. I rode it out but was noticeably stimulated for maybe a day and a half or so.