Getting rid of clipping in over-modulated voice track

Just recorded a remote interview which, because of the program limitations, I was unable to monitor levels as I usually do.  I imported it into Audition and our host is overmodulated.    I folllowed  Mike Russell's 2013 YouTube tutorial, "How to Fix Distorted Audio in Adobe Audition" and then used RX-8 De-crackle and De-clip plug-ins, and finally went into the spectral view in Audition and manually decreased the voulume of the high-end where most of the trouble is.  But there is still "fritzing" and some distortion, so I could use some guidance from on-gigh -- anything else I can do to fix this?

Sample of the un-repaired original and another one after processing.  

Thanks in advance.

Rob

  Model Name: iMac

  Model Identifier: iMac12,1

  Processor Name: Intel Core i5

  Processor Speed: 2.5 GHz

  Number of Processors: 1

  Total Number of Cores: 4

  L2 Cache (per Core): 256 KB

  L3 Cache: 6 MB

  Memory: 16 GB

  Boot ROM Version: 87.0.0.0.0

  SMC Version (system): 1.71f22

  Hardware UUID: BC7F645E-B12A-5C39-96A4-A2CEDD75192C

Running Audition 13.0.13.46 (the highest version I can on this antique iMac).  

Also using Izotope RX-8