Encyclia Dickinsoniana seedling... tough to grow?

[cythaenopsis]

As some of you may have seen in my earlier postings, I bought 3 seedlings back in late July. Overall they have been doing well and showing reasonable growth. That is, except for the Encyclia Dickinsoniana.

Here's a photo taken in early October:


At this point, the Dickinsoniana is down to just 6 leaves. It would have been 7, except that a nearby plant accidentally fell on it and snapped off one of the medium sized leaves. At present there are 3 rather large leaves (two now beyond 4") and 3 smallish ones. In the beginning it had double this number.

Is this normal? Do seedlings of the Encyclia variety tend to start out with many small leaves, then as a few get rather large it lets some of the smaller ones fall away? The roots are bright green and aside from a couple of very small black spots that had appeared on the leaves that fell away, it looks fine. There's even sign of some pseudo-bulb swelling going on at the base of one leaf. But relative to the Oncidium and Cattleya seedling I have, this Dickinsoniana is languishing in showing any new leaves. At least some of the existing ones have grown a bit long. But I'm wondering if my environment is not conducive to this variety.

Any ideas?