As with all mechanical devices enough clearance has to be built into the device to allow movement of the components. Should you be experiencing leakage, one fix is to reduce the amount of clearance between the hopper and the disk by carefully sanding down the risers that the hopper is mounted to. Place a disk between the risers with a piece of scotch tape on top, and use a file or sandpaper attached to a flat surface, and file/sand until contact is made with the scotch tape. Photos of this can be found in the help ticket "Excessive Leaking Auto Disk Powder Measure Fine Ball Powder".
Should the disk travel past the drop tube, all of the powder should have dropped down the tube already. A few flakes of powder may stick to the disk just from static.
Generally the only powders we see that give the Auto Disk Powder Measure problems are Accurate #5, Hodgdon H-11 or Winchester 296. All three of these are very fine ball powders, and can get between the disk and the hopper. The fix is to order the parts to update the Auto Disk to the Pro Auto Disk. Or, per our Lee Lifetime Guarantee, we can offer a 50% discount on a new powder measure. To take advantage of this offer, please send us a photo of the existing Lee Precision product you own, with a photo ID or piece of mail showing your name and address in the same photo.
