Well, I finally got it sorted this weekend .. It's been something I've been meaning to do for ages ... so I'm pretty happy!
I used steel wool to remove all the bubbling and rust first ...
Then used some 800 grit to get it smoother ... then just started applying the primer and flatted back in between coats with really fine wet & dry paper ...
Then I put about 5 coats of Matt black paint on it and they look Perfect!
The only problem now id that my blades look old and worn ... so I've had to order some new ones .. LoL