Yeah I'm going to take your advise and leave my boys as they are. I also have a herd of females in the same room as the boys so I should probably just be happy they all get on! Still trying to work out how I could maybe squeeze another 2x5 in somewhere lol...maybe I should move to a bigger house....or extend! Lmao.
I think my trio is down to pure luck also. My first two boys are very laid back, and the new one made it perfectly clear he didn't want to be boss. I didn't realise trios were rare....if I had of known at the time I probably wouldn't have tried....although glad I did now

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Do you think if I had the 2 boys in a separate cage in the same room it could still cause problems?
Thanks for all your input guys x