I have the intake off of my hotair GN, and before I put it back on I was going to clean and repaint it (its a mess right now). I don't want to just paint over the old paint, so I was thinking of getting it sandblasted to remove all the grease grime and paint. I was wondering if this is a good or bad idea? Will sandblasting change any of the critical dimensions enough to cause problems? I just want a nice clean bare surface to paint on, and I know a guy who will do sandblasting for me for very cheap, so I figured it'd be a good way to go. Any other ideas/suggestions?