Hmmm... The trick I heard is to wait for the top spag dressing to get crunchy before watering. I've watered twice since last thursday and made sure on my watering yesterday it wasn't too dry in fact I thought It may have been a lil early maybe a day because the spag wasn't crunchy but approaching crunchy but the top layer of bark looked dry. My mottled paphs sit in about 1/4-1 inches of water (depends on heat) and none of their new growth has any browning.
Watering for the multiflorals should be the same as for the Maudiae-types (and warm-growing Paphs in general). Their culture is the same, only requiring more patience since they grow more slowly.