Many thanks All. I also got VERY positive feedback from a few other muso sites I posted it.
For those of you who are familiar with the original, or go and listen to it, you will notice a fair few smallish changes to the guitar and vocal lines and harmonies, they arent mistakes, we did that just 'cos we could, and it felt better that way. LOL!
I like singing this sort of thing, but, it doesn't stretch me much technically, so in some ways it feels a bit self indulgant, sort of cheating (I'm not sure how).
The acid test is probably the Iron Maiden fan club site, where we will probably post fairly soon.