well i just have a few questions i'm hoping to have cleared up before getting to far in to this. 1. the 2.5' diameter tube is to large depsite the rubber thingy on the bottom to create a steady vacuum(not naturally girthy enough) How can i fix this? 2. what is the "doughnut effect" i've been reading about? 3. for what fragments of time should i stay in the pump? (currently doing 5,10, 15.) resting/reseting(new blood flowing) for 5 mins in between each. 4. How long will it be for "permanent"(sceptical) results. answers to these questions and any tips/tricks/advice are greatly appreciated.