IAS looked at the position of the Optical Table and gave us the deltas from perfect.  We looked at the Support Table level and found it level to +-0.1mm.  We did need to shift the payload on the Optical Table however, I had adjusted it to correct the overload I had found in aLOG 4242.  We leveled the Optical Table now to +-0.1mm at an elevation of -200.2mm global, 0.2mm low.
IAS gave us a correction for horizontal of 0.7mmN, 3.1mmE & 369urad cw but I decided not to do this.  We've already pulled the Support Table 5mm east and I'll likely already have to shift some HEPI piers around.  Our position spec for this table is +-3mm and tht was what we told ISC after they gave us a spec of +-6mm so I think we are OK.

Thanks to Scott & Ed