The bike came with a 28 cog and a 30 chain ring. Specs for the 105 long cage say that these sizes are the maximum. If I but a 24 chain ring will it fit the hole pattern on the crank? I plan on trying 32 without changing the DR. As someone above suggested, I might be able to squeez by. But I like the idea of the 24 chain ring better. Thanks for the input.