:D

Thanks so much for the info!

I'm learning a lot!

I'm not sure how I managed to create extra egdes - oops! I'll have to keep an eye out for that sort of thing...

Also, it's going to be a hover tank - I'll post it, along with some others, after I've done a bit more work on them :P
(they only need to be simple, as they're going to be very small in my game)