I tweaked a few parts in the melodies and played with a little bit of volume, panning and reverb. I think its a bit better. I still don't know how to manage that piling up of the volume in the breakdown in the middle though. Drives me nuts!
Made on PxTone Collage, a free sound editor created by Daisuke Amaya (AKA Pixel). You can get it here: http://hp.vector.co.jp/authors/VA022293/pxtone/index.html