1) Engine protector bars on Suzuki Bandit 600s are there to prevent the engine being damaged should the bike fall over on its side. They are not there to be used as stabilisers or lean angle meters on corners once the footrest is at a 45 deg angle to normal. 2) When practising stoppies, do not attempt them on silky smooth shiny black tarmac that has been laid in the last 2 weeks. The front will lock up when the rear end is up in the air and you may fall off if you try it again. This is going to end in tears, isn't it?