S5 Prints Warping Near Edge of Build Plate

[CTotten 18]

We recently added an S5 to our lab (already have a 3E).  I have been printing parts for a project for over a year on the 3E.  I can fit 25 to 30 of the same part on a 3E build plate.  I can fit twice that amount on the S5 build plate.

 

I finally started printing my next production batch of parts on both printers.  I am noticing that some parts on the S5 appear to be warping.  This is occurring at the outer edges of build plate only.  This doesn't happen on the 3E.  My first assumption is that since it is larger build plate, perhaps the bed temperature is not as consistent toward the outer edges.

 

Has anyone done evaluations on the bed temperature consistency on the S5?  My next print I will probably bump up the bed temp a few degrees to see if that changes anything.

[Julius 1]

OK, it might not help you with your problem, but I do have printing issue with US5 compare to U3. On the edge close to the left side, there is a spot were the US5 do not print correctly. I try many thing (like manual leveling and X-Y calibration). I even tested the glass, for slop or imperfection. See picture. Still try to find out what is the problem. Better to share, so we can find answer together.