I also noticed another oily crap in cbd isolate with a lower boiling point: Looking to buy isolate - #21 by The710eXecuTivE
To avoid smelly and overall unconsumable and toxic conversion you have to use trustworhy cbd that hasn’t been denatured. This is the most important advice regarding conversions anyone can give. I haven’t found any yet and seems i have to make the isolate. And then still recrystalize the cbd to get the yellow oxidized yuck out. Also it is better to not distill to the last drop but leave a little puddle in the boiling flask, I think a lot of unsavoury and yellow concentrates there, but maybe not necessary with both clean and recrystalized cbd.
The purple could be from leftover bicarbonate or whatever you used that interacts with leftover unreacted cbd like a beam test but I have no idea. Maybe you used too much and didn’t wash and dry properly. May I ask which conversion process you do?
I had a little purple tinge sometimes only in high d9 conversions made with very dilute hcl according to Adams, which is actually not a good way to do it but a very accessible route to mainly d9. But it makes many other things too in traces and a lot of ethoxy-hhc. But no purple in what ended up as mostly d8, so it could be d9 specific.
You should smear lube around the rim where the hole is that leaks.