I inverted the legs of the "L" gantry configuration and reran the loads. As before the images are respectively, Geometry, Loadcase, Results, and another view of results. Deflection decreased from configuration Gantry_4 of 0.034mm to 0.030mm for Gantry_5.

Click image for larger version.  Name: Gantry_5_Geometry_hc.jpg  Views: 4515  Size: 144.8 KB  ID: 23266Click image for larger version.  Name: Gantry_5_Loadcase_hc.jpg  Views: 4421  Size: 116.7 KB  ID: 23267Click image for larger version.  Name: Gantry_5_Results_hc.jpg  Views: 4483  Size: 238.7 KB  ID: 23268Click image for larger version.  Name: Gantry_5_Results_2_hc.jpg  Views: 4406  Size: 185.1 KB  ID: 23269

Better than the decrease of about 10% in deflection is the more uniform deflection distribution over the gantry. In addition the most distorted part is the Z Axis block which is fake anyway. Pretty happy with this configuration but as mentioned above I will need to do some comparisons with the base gantry before committing to the Gantry_5 design.

John C