I have a question regarding the o3 blue. My dad have been using prince pro for a bout 20 years now however he just broke his last frame 2 days ago. So he bought a prince O3 blue for the replacement. However he claimed that the frame is too light and it felt like as if he was hitting with a cardboard. I told him I might be able to help him by adding lead tape on the frame. Does anyone know where to add the tapes at, if i want to get the same feel as the prince pro? I think the pro is about 12 oz in weight (after strung) and about 2pts head light. But adding on the 3,9,12,6,2 and 10 thing is what i don't understand. Can someone please help? I looked at the tw learning centre and it said that dont add leads more than 6 inches at once.. what is the reason for this?