I went to my local tool store yesterday and picked up a Fein Multimaster and the profile sanding kit. The large curved sanding pad in the profile kit made quick work of my ugly fillets. This was by no means a cheap solution (tool and profile kit came to almost 400 bucks with tax) But I'm happy with it. If anyone does try this just make sure you keep the tool on a low speed. When used at a high speed it gets so hot the plastic pieces start to melt, I kept it at speed 2 (out of 9) and it worked great and didn't get hot. Here is a pic of the attachment i used.