+1

I've come across this even in my limited experience with conversions; If yours is a budget conversion and you don't want to shell out the $$ for new cranks - refer to Sheldon's article on Bolt Circle Diameter (BCD) and if as you say you're able to swap your outer chain ring to the inner but it won't fit - there's a good chance you can at least get a smaller ring to fit against your frame on the inside of your crank spider arms.

The Rocket chainrings can give you a cheap option if you need to swap. There are the 110/130mm BCD rings available which are great value for the budget tinkerer