Are you perhaps not getting juice around the base as you put the top cap on?No I haven't... but it happens on all my Cyclones and I have a few... some old and some very new... I think it's just a thing with Cyclones... until the wick settles (which it does in 5 minutes) there is a small leak and then it's gone until I rewick...
This occurs quite often with me and by habit I only put the cap down half way, wipe clean and then all the way down.
Just a thought.