Skip the pectin. Pectin is an ancient internet myth. It does nothing to help pass a U/A. Its the copius amounts of water that is consumed with the pectin that allows people to pass. These people have passed by merely diluting their system. They wouldve passed anyway just on the water consumption alone and without the nasty tasting pectin to go along with it.

Since youre diluting anyway, you might as well follow the steps outlined in the Dilution "sticky" thread (disregarding the "aspirin" step).