TAZ 5 Hot End to Cooling Fins loose?

Noticed this had some play in either direction (Had to remove the nozzle for a thorough cleaning :cry: ), is it supposed to be loose? In a hexagon install video the guy said this was supposed to be nice and tight. also I assume/hope the the blue stuff on top of the black stuff on the threads is just some sealant and tamper seal? i havn’t taken it off but can see it from the front.
http://i.imgur.com/RpAwC2z.jpg

I’m also getting this notorious nozzle clog that all the cool kids are talking about (PLA).
http://i.imgur.com/D7xQo1k.jpg
:frowning:

The blue ‘stuff’ is the thread seal/lock put on during assembly, but the ‘black’ stuff looks to be filament leaking up the threads. So I think your thread seal is broken and allowing leakage up the threads.

And the upper fins and lower block should not be loose!