Ontop of this, you should try using compressors, this allows you to prevent the volume from peaking to drastically, and just smoothens things out a bit in my opinion. I would recommend going into the Audiotool Next beta for the best compressors, the gravity is an awesome compressor which gives you a visual aid of how much is being compressed, and the Quantum allows you to compress the different frequency ranges.
try to aim the red bar's peaking around 3-6 dbs, that i find does the best.