Hi potatoes, welcome! I have never noticed that before. I don't remember the unit of measure I use with my scale, but this is what I do:
1. Make sure you have a brand that has the tiny beads, some 60mg have about 300 balls.
2. Empty, exactly weigh and average 3 capsules. Let's say the average is 43.33MG (based upon your number of 43MG above).
3. You have to decide how fast you are going to wean. I'm weaning 5% every 2 weeks.
4. Lets say you are removing 5% for 2 weeks. Open a capsule, weigh the contents and only return 95% (41.16MG) of the beads back to the capsule. Don't throw out the 5%, this amount will grow so you can make extra pills for empty capsules you can buy.
5. I make 7 capsules at a time. I stay on the same amount for 2 weeks, and after that I wean down 5% more (so weeks 3 and 4 I take 90% of the 43.33MG). I've been told when I get down to 10 or 20 mg, that 5% will be too big of a wean. If so, I will go down 4, 3 ,2,1 percent until I find what works.
Good luck!