I would personally give the toes a harsher roll. And that will prevent them from chipping like they have been. I would also take a little bit more of the bars out and switch them to 6 week trims. 4 weeks is just to close together and more labor for you. You also want your horse more on its soles as just picture you walking on your finger nails or toe nails is like them walking on thier hoof walls.
They aren't on a four week schedule. I get under them both once a week to rasp off a small amount and re-balance. This is a learning experience for me and labor is a non-issue, so I like to do it as often as I can. Especially since this was their first real barefoot trim, I wanted to do it in smaller steps to make it easier on them. It's amazing how well their feet have adapted and how fast I've learned.
Yukontanya- That rasp is smaller and twice as expensive than your regular run-of-the-mill rasp. I'd just get a real one instead. I've heard that the RidersRasp falls apart a lot. But hey, I've never tried it so I could be wrong.
Thanks for the feedback, guys. I'm really dedicated to doing the best for their feet that I can. It's really an art form and I'd love to be able to master it one day. It's fascinating because there's always something new to learn. :)