Some leakage is normal. Your drip tray will catch these drips. You can then add the syrup from your drip tray back into your warming tank for your next filtering session.
If there is excessive leakage, tighten the nuts evenly on both Compression Rods with a wrench. Turn each nut a quarter turn and alternate until tight.
Smoky Lake has pre-applied a special compound on the Compression Rod threads which will prevent thread binding. As part of regular maintenance, you should reapply anti-seize.