Well, you don't really need me to tell you about the "anomalies" in the Finecast material. That has been discussed to death on many forums. I wanted to show in this post a possible solution...
This particular item was very messed up. It had been sitting around for over a year as I tried to figure out what to do.
As it turns out, I recently decided that I wanted to have an Aberration for my unit of Grotesques with a Scissorhand. I ended up taking parts from the Chronos/Talos sprue in order to make it useable. You can see all the darker grey plastic parts, as well as a few of the additional green stuff tubes that I added.
I even had to replace a lot of the drug pistons on the back, as those were either horribly miscast of missing altogether. I will be fixing my other grotesques by using polystyrene tubing.