Trouble with masdievallia's!

[greenpassion]

I have two miniature masdies, (can't remember their specific names) but I've had them for several months. I keep them with my other orchids, phals and oncidiums, in S/H, on a heat mat, under LED Chip Tec lights (from Orchid Web) with a small fan for circulation. Also a whole house humidifier as well. All my orchids are doing super, spiking, sending out new roots, which I can see thru the glass containers I drilled for the S/H. Anyway, the masdevallias aren't doing so well. One of them is holding it's own, not really changing at all. The other one has been constantly beginning new leaf growth but at the same time losing leaf after leaf with each new leaf emergence. When I recieved them from a web site, neither one had flowers, but had flowered at one time. I treat these orchids as I said, just as I do the others, same light, same MSU fertilizer, humidity etc. What is the problem?scratchhead: