Although it seems the watchdog trips at the ITMs are understood, there is now another variable to consider.  The cleanroom that has been inserted into the beer garden for the upcoming ITM swaps has some of it's curtains draped over the HEPI crossbeams.  With the cleanroom not currently running and no plans to move the cleanroom in the near future, the interference should be rather static.  See pics for a reference to the extent of the interference (and let us know if it is a problem).