First Frame Loading

I’m trying to cut down on my movie size, especially in the 1st frame where my preloader resides.

My AS Classes are exporting on Frame 2…I have no MovieClips exporting on frame 1 from the library…and as a test I removed all content from frame 1 on my timeline. My bandwidth profiler says I still have 128 kb of data on my 1st frame. Any ideas why?

Thanks.