Pray do tell please - what are these mods you applied?
You can enter a settings menu to change the parameters. Basically tell it to run at full speed closer to the finished charge weight. I’ve not got the instructions on hand but I’m sure if you search it should come up maybe on Snipers Hide or UKV.
The other simple mod is to find plastic straws, (maybe more tricky these days) and cut a length to fit the very end of the dispensing tube. If the straw is too small then nest them together to create a push fit, tapering the end so the powder enters smoothly. The smooth straw enables .1 grain adjustments easily with no clumping.