Cheers De Facto,
Thanks for pointing that out. I didn't realise as it has been several years since I flew the Classic.
The key point that I was trying to make is that sometimes we come up with an unofficial procedure which we believe is enhancing our awareness of aircraft systems but subconsciously it is achieving the complete opposite. I have come across this several times over the years on several different aircraft types.
As the saying goes.... 'most QRH's and SOP's have a bit of blood on them!'.