I recently acquired an OLP MM3 and compared to my Jazz bass the neck is like a baseball bat. I did some minor shaping on my Jazz to feel more like a Geddy Lee sig. I just did that with some sandpaper, but the OLP is going to take a lot more than some sandpaper. I'm looking to take somewhere between 1/8 and 1/4" off the entire back, and then try to make it a little asysametrical. My question is what tools do I need to look into. I read another thread about a microplane. Is this all I would need? Also, are there any warning signs that I'm getting too deep besides sanding a hole into the trussrod route?