Make sure you thoroughly degrease the PM, per the instructions. It is shipped covered in oil, and you have to get that out.
Then run a pound or two of powder through it (with the metering screw backed out past where you'll use it) to "dry lube" it before trying to set it to throw a specific weight.
If you're having problems with static electricity, wipe it down inside and out with a clothes dryer fabric softener sheet.
Andy