I found the expression "コツがいったり" in a tourism advertisement for the 金閣寺 in 京都:
From what I can see via web searches, it doesn't appear to be a particularly uncommon expression, as it is also used in lots of other sources, but I can't find any definition of it in any dictionaries.
I'm familiar with the 〜たり（する） structure, the confusion is in regards to the コツがいった. I assume that "コツ" is the same word that means "knack", "essence", or "technique", etc., but I'm not sure of the verb (if it were いる, wouldn't it normally be いたり?), and it seems to be a set expression based on its usage.
Thanks for the help!