I take my hat off to you Graham trying out oils, often thought about it but I have a hard enough job with acrylic.
I think you'd be pleasantly surprised at how easy and forgiving oils are to use Mick. Its a bit like having an "undo" button for those occasions where things don't work out quite the way you expected; just load a brush with your choice of solvent (I use Zest-It), then erase the mistake and try again