Sounds like the
juice is collecting at the bottom of your drip tip and not falling onto the atty bridge.
The drops just hang there defying gravity at the end of the drip tip.
There is a physics principle involved here, surface tension and what not.
You need to blow a little puff of air into the drip tip to clear this
juice each time you drip.
There are utube videos on dripping that show this "little puff" technique.
I just can't find one right now, because I'm looking for it.