Good news
 

Well whoever said the Neu 1521 (old design) has a screw on front bell was correct. I was about to apply some loctite and started twisting. To my pleasant surprise threads started showing. I backed the can out a little, applied some thread lock and tightened it up good. I used blue thread lock. If that doesn't work I'll move to red.

I feel much better knowing that the can screws down.

Yea... and we all know how easy it is to heat up a feigao. Just run it for 5 minutes.:lol:

That was a good one. I meant I used my little torch on the places I used the glue. Heat generated by the motor didn't make it come loose.

I would not use red lock tight on that, for 'whatever' reason you might have to take it apart in the future, red will be 'near' impossible to get off.