yes...i know this sounds stupid, but bear with me. i've acquired a big old outlook gas bbq for next to no cost. i want to use charcoal on it - better flavour etc. am i mad to think that i can just stick a tray containing charcoal into the main 'void' of the bbq and fire it up? just to be clear - i'm not wanting to ever use the gas facility on the bbq, i'm more worried that the heat from the charcoal will be too much for a unit designed for gas. any thoughts gratefully recieved!