There's been many fosters and rescues staying for short periods over the years, and with a few exceptions, there were always fireworks from various cats. This time, Storm was one of the group in 2 weeks, and now Mikesch is also accepted totally as well.
Although I have seen your boys cuddling so often I am still amazed ! Four adult tom cats and they get along sooooo well. There are so many examples where it doesn't work so well when you have more cats including my Willi and Morris. I always had to keep an eye on them.