diff --git a/pycbc/workflow/datafind.py b/pycbc/workflow/datafind.py
index 948cd0f350d..39b8b6d440a 100644
--- a/pycbc/workflow/datafind.py
+++ b/pycbc/workflow/datafind.py
@@ -745,19 +745,15 @@ def convert_cachelist_to_filelist(datafindcache_list):
 
             # Populate the PFNs for the File() we just created
             if frame.url.startswith('file://'):
-                currFile.add_pfn(frame.url, site='local')
-                if frame.url.startswith(
-                    'file:///cvmfs/oasis.opensciencegrid.org/ligo/frames'):
-                    # Datafind returned a URL valid on the osg as well
-                    # so add the additional PFNs to allow OSG access.
-                    currFile.add_pfn(frame.url, site='osg')
-                elif frame.url.startswith(
-                    'file:///cvmfs/gwosc.osgstorage.org/'):
-                    # Datafind returned a URL valid on the osg as well
-                    # so add the additional PFNs to allow OSG access.
-                    for s in ['osg', 'orangegrid', 'osgconnect']:
-                        currFile.add_pfn(frame.url, site=s)
-                        currFile.add_pfn(frame.url, site="{}-scratch".format(s))
+                if frame.url.startswith('file:///cvmfs/'):
+                    # Frame is on CVMFS, so let all sites read it directly.
+                    currFile.add_pfn(frame.url, site='all')
+                else:
+                    # Frame not on CVMFS, so may need transferring.
+                    # Be careful here! If all your frames files are on site
+                    # = local and you try to run on OSG, it will likely
+                    # overwhelm the condor file transfer process!
+                    currFile.add_pfn(frame.url, site='local')
             else:
                 currFile.add_pfn(frame.url, site='notlocal')
 
diff --git a/pycbc/workflow/pegasus_sites.py b/pycbc/workflow/pegasus_sites.py
index 59209b55678..b6e5813d045 100644
--- a/pycbc/workflow/pegasus_sites.py
+++ b/pycbc/workflow/pegasus_sites.py
@@ -224,7 +224,7 @@ def add_osg_site(sitecat, cp):
     # On OSG failure rate is high
     site.add_profiles(Namespace.DAGMAN, key="retry", value="4")
     site.add_profiles(Namespace.ENV, key="LAL_DATA_PATH",
-                      value="/cvmfs/oasis.opensciencegrid.org/ligo/sw/pycbc/lalsuite-extra/current/share/lalsimulation")
+                      value="/cvmfs/software.igwn.org/pycbc/lalsuite-extra/current/share/lalsimulation")
     # Add MKL location to LD_LIBRARY_PATH for OSG
     site.add_profiles(Namespace.ENV, key="LD_LIBRARY_PATH",
                       value="/usr/local/lib:/.singularity.d/libs")