That pink stuff is silicone. If it is blackened or loose pull it off, otherwise it is fine to leave it be.
If you exposed the winding then you may want to check continuity before applying fresh silicone... if you somehow nicked a lead open it will be much more of a pain to find and fix after you coat it.
BTW if you want to see the process of coating it I have pics of a CTC16 fly I did a few years ago in a thread here on VK. Shango66 on YouTube has some videos of this too.
Last edited by Electronic M; 11-27-2018 at 11:33 AM.
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