Miltonia moreliana Dividing/Potting Help

[Clawhammer]

[IMG]Untitled by Eric, on Flickr[/IMG]Hello!

This miltonia moreliana has been growing like wildfire for me, but has only bloomed a couple times, and it has been a couple years. I am chalking this and the crinkled leaves up to rooting issues. I have been having a heck of a time getting new growths to root. The roots seems to die when hitting the media, or don't break through the leaves at the bottom of new growths and get stuck. I tend to have this issue with most oncidiums, especially ones that grow out of potting media.

Any tips for blooming this species?
Any advice on getting a healthy root system out of these divisions?

Thanks!