Contour Enthusiasts Group Archives Forums General Group Buy Lightened and Underdriven P/S and Alt Pullies

first off, i apologize for the double post. but i wanted to clear something for myself and others based on a question from KaptonContour about the underdriven crank pulley mated with the underdriven p/s. he is running the ASP at 25% and i know that i am personally running the UR at roughly the same or slightly more %. what are the negatives to running them together if any?? i want performance but need peace of mind that my baby wont blow up again