I just asked my wife, an RN about this. She hit a nerve when she drew the blood. If you give blood again & it hurts that bad, have them take it out. Nerve damage takes a long time to heal.
I have a set of Pingel replacement cush drive rubbers for sale. These are new & are the nice heavy duty kind. They will fit 99-07 Suzuki Hayabusa, 88-93 Katana 1100, 86-05 Savage 650, 89-92 GSXR 1100, & 88-92 GSXR 750. $50 shipped.