Any good 1-2-4 exercises?

[EriktheRed]

I've decided the 1-2-4 method is for me. For my fingers, it doesn't really start feeling comfortable using all four fingers until the 7th position.

Any good exercises I can do when I'm using 3?

[TBAR Shane]

There's the Simandl book, for upright which goes by 1-2-4. But I'd suggest simply going over anything that you usually play, usual exercises, usual songs, just remain conscious of your fingering.