diff --git a/utils/threshAlgos.py b/utils/threshAlgos.py
index 146a997c..1ac1df3b 100644
--- a/utils/threshAlgos.py
+++ b/utils/threshAlgos.py
@@ -1496,7 +1496,7 @@ def getDetName(entry):
                  # make nVFATs TLines
                 kneeLine= []
                 for vfat in range(0,nVFATS):
-                    canv_Summary1D.cd(vfat + 1).SetLogy()
+                    canv_Summary1D.cd(chamber_vfatPos2PadIdx[gemType][vfat]).SetLogy()
 
                     # make sure the inflection point is there
                     if dict_dacInflectPts[dacName][ohKey][vfat][0] == None:
@@ -1508,16 +1508,13 @@ def getDetName(entry):
                     if type(graph) == r.TH1F :
                         graph = r.TGraph(graph)
 
-                    # get maximum y value
-                    y = graph.GetY()
-                    y = np.array(y)
-                    ymax = np.amax(y)
+                    graph.GetYaxis().SetRangeUser(1e-1,1e8)
 
                     # Draw a line on the graphs
-                    kneeLine.append(r.TLine(dict_dacInflectPts[dacName][ohKey][vfat][0], 10.0, dict_dacInflectPts[dacName][ohKey][vfat][0], ymax) )
+                    kneeLine.append(r.TLine(dict_dacInflectPts[dacName][ohKey][vfat][0], 1e-1, dict_dacInflectPts[dacName][ohKey][vfat][0], 1e8))
                     kneeLine[vfat].SetLineColor(2)
                     kneeLine[vfat].SetVertical()
-                    canv_Summary1D.cd(chamber_vfatPos2PadIdx[gemType][vfat] )
+                    canv_Summary1D.cd(chamber_vfatPos2PadIdx[gemType][vfat])
                     kneeLine[vfat].Draw()
                 canv_Summary1D.Update()