Thank you for the response. Here is what I did since I posted this some 10 days ago, and my findings. First, I believe you are correct that there was a tilted bed situation and it was not compensated for during the auto bed leveling. Also note that PLA is a little more forgiving on the first layer while PETG with glue stick did not like that difference in bed height, hence my post.
I recently purchased the Wham Bam magnetic bed with removable PEX flexible steel bed. My original PEI bed with about 2 years of use needed replacing so now was a good time to remove it and install the Wham Bam. After installation my test print had similar not-so-good results. I removed and inspected the Ningaflex bed corners and found the front right was a bit more squished than the front left which suggests the front right corner of the bed being a little low. The rear bed corners had similar differences with respect to the rear left and rear right. I swapped the front bed corners and also swapped the rear bed corners. Reinstalled the washers and made another test print. I was much better but still a little off. I decided to Print new bed corners out of PETG. I replaced the front right bed corner with the new PETG one. I did a test print and it looks real good so that is where I am now.
The picture shows my TAZ6 with the new Wham Bam steel bed and you can see the new blue bed corner on the front right. On top of the bed I show the original Ningaflex bed corner along with a spare blue PETG corner. The test print as shown is a PLA print and I inserted blow up images of the front left and front right corners. The first layer is near perfect in my book. Since then I completed the large spiral print in black PETG. All is good now! Side note: I printed a couple of ‘L’ brackets which are clipped to the rear of the steel bed frame for easy placement of the flexible PEX steel sheet.