I've aligned the REFL beam from RM2 through the ISC sled. The beam from the pick-off BS is temporarily dumped in a spare black glass V-dump. The beam in the sled is well aligned through the first two lenses and the first 2 turning mirrors but is about 8mm high on the last turning mirror. It seems that the turning mirrors on the sled need to be adjusted to fix this but I wanted to consult with Keita about this first as it was my understanding that these had already been aligned in the lab.