Insides of a Feigao motor

[Rtsbasic]

Hi, my 8L keeps falling apart (still need to find a way to hold it together..maybe going to buy some epoxy this week to try with it).
But what I've noticed is that part of the windings has like a ridge in it, where it goes higher than everywhere else, right infront of where the 3 windings leave the can. Its been like this since the day I brought it. Is this normal? I've attached a pic, its circled in yellow, sorry its not very well focused. This motors has about 5 mins total drive time on only 9 cells so I'm not sure if its affecting it. I don't want to run it again if its been mis-wound or something, and obviously I need to glue the endbell on as well before I can test it.

Thanks.