...BTW your Bieber avatar is awesome.-Malone
If the crank is moving when you tension the timing belt, you dont have the slack positioned in the belt properly, as the Ip should be locked, therefore blocking movement of the crank on the "tight" side of the belt. You are allowing to much slack between the Ip/crank..I think you guys are making it too complicated with the wood ect. Get the engine relatively close to tdc, and re-orient the pulley so the "v" is where is should be, and you will find your tdc.Coming from someone who as tensioned more than a hundred timing belts and never caused a problem.