I am starting to find that when you soak the piece in solvent too long, it actually makes things harder. For me, using 91 alcohol's main function is the break the bond, not break down the tape completely. Ill squirt it through the lace and wait, a little squirt more. once I see the lace is starting to lift, I detatch. The more you soak it in alcohol and let it stay it starts breaking down the tape more and u get more of a sticky mess.