I ran into this during my build today. Everything fit nicely after filing two of the legs down. I haven't tested yet though, as Mouser seems to have messed up a good portion of my order.
Instead of red LEDs, I got a two large four pin metal terminal connectors. <fp.
They also didn't pack the 330 ohm resistors, and gave me the too large (i believe they are 1/2 watt) 180 ohm resistors.
Does Mouser screw up orders this bad quite often?