if the fillmore runs a 1/8 chain i think the most pain free solution would be to get a 3/32 EAI cog. it'll shift the chainline on the hub and 3/32 would be more forgiving on it as well.
@edmundane started
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if the fillmore runs a 1/8 chain i think the most pain free solution would be to get a 3/32 EAI cog. it'll shift the chainline on the hub and 3/32 would be more forgiving on it as well.