Me too.. I tried SMEARFIRE, oh, sorry, Blackfire long ago and hated the way it smeared! Took me some time to resolve and results were not that spectacular for all this effort.
I then switched to Zaino and didn't have the problem. However, the new Z5 will leave a bit of smear or haze, and found that a little Z7/distilled water in spray did the trick. No more smear after that.
I remember the old Megs #20 smearing all over due to all the solvents working the finish trying to clean and bond all at once!
Look at it this way, if it's that much of a PITA to apply and remove/maintain etc, then it's time to move to something else and toss the problem product away. Then, it's off to find something new and better, easier etc.
Regards,
Deanski