Otochilus is not easy. They all look the same and very often they are misidentified. The bulbs are rounded in these pics (is it an important character? I dont know yet) that looks like porrectus, however, the flowers look like fuscus!!
Leaves are broad so this is not lancilabius.
I need to sit down someday to look at all species in one go. Till then lets keep it as porrectus.