The saga continues on the chimney install. We got a few of the SS Selkirk pipes to lock together perfectly but now we’re having a heck of a time trying to get the rest of the SS pipes to lock together, they just keep wanting to spin and when you wiggle them they come apart. We did get the pipe from two different places but all pipes are Selkirk Sure Temp same model number. I know there are locking bands that need to used as well. Is there some kind of trick to it to getting them to lock together? How imperative is it that the pipes lock together as long as the locking band is installed?