Already made the same mistake.
The pin order around opto and triac must be mantained to keep driving properties.
Pin4 -> resistor -> Gate
Pin6 -> mains
Pin6 if i remember can be connected either to A1 or A2 in parallel but be mains feeded
(Please correct me if im wrong, fuzzy memory right now)
Anyway I always base my triac-opto design on this schematic:
(no snubber there, I use triacs with integrated snubber)
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