If the 10Stg was recently changed with a replacement filter and the water seems to be flowing slower than usual, try these tips:
1. Take out the replacement filter, flip it around and insert it back in the cartridge. It could be a possibility that the filter was inserted incorrectly.
2. If Step 1 does not work, take out the filter and set aside. Soak the system cartridge in warm water (Do not use hot water) with 1 cup of white vinegar for at least 30 minutes. This may be due to mineral buildup restricting the flow of water.