Man if you still don't have it, I recommend getting a license for ''Waves Sibilance''. 
	One of the things that I most hated was going after those ''s'' sounds to correct them, it was a pain in the S indeed lol 
	 
	After I got Waves Sibilance my nightmares with it ended. It handles practically 99% of the problem every time automatically without affecting
 
	the voice itself and just attacking the evil S's. You just need to figure out the best settings for your voice, then save a preset and use it every time. 
	 
	Listening again here, the S problem happens in many parts of the lyrics. 
	As for the crash... I am not sure if it is really the frequency or just a bit too loud. 
	I am sure you will find out though. Everything else sounds great! : )