Did a second PCE purity test run through in my Thomas Nelson KJV, not the 12 verse test, but the 541 verse test. I have found that my Thomas Nelson KJV (which scored a 6/12 on the 12 verse PCE test) has a total of 214 differences from the Pure Cambridge Edition. The Bible Protector website notes a total of 541 differences in various KJV editions, which means my Thomas Nelson KJV's final score on the 541 verse purity test is 327/541, or ~64%. I have made a note on each of the 214 differences in my KJV, so now it scores a 541/541.
I will again preface that these differences are miniscule and they don't actually affect core doctrine. Most of the differences are spelling. Some of the differences however might need to be considered in the rare case that you are in an obscure study of a certain passage, but they aren't to split fellowship over by any stretch of the imagination. To make a fuss about these differences is just dumb. If you don't have a PCE KJV you're missing out on literally almost nothing.
This is my current stance: if you are a layman don't worry about whether or not your KJV is a PCE. But if you plan on seriously studying the word of God extensively like a maniac, get a PCE. I recommend from Church Bible Publishers.