Sharry Baby suffering
 

I split a very large Sharry Baby in two over a year ago and it has never recovered. The leaves are all spotty and yellowish and despite throwing out some new shoots it seems very slow growing. I know the bulbs look wrinkled but they were like that pretty much when I got it and i am fairly sure it is getting enough water and feed. My other oncidiums seem to be doing ok so I just wonder if anyone has any thoughts on this problem child.

Sharry baby has finer roots than most other oncidiums. I have to water mine a bit more often than the others because of this. Your plant looks good,
It needs a bit more light, but it's growing new pseudo bulbs. So it must be happy about something. :)

The new growth looks good - I'd watch how the new growth is doing, the old growth won't improve at this point.