Hi Greg
Appreciate you taking the time to respond. Hopefully the definition clarifies.
As adjectives the difference between opposite and inverse
is that opposite is located directly across from something else, or from each other while inverse is opposite in effect or nature or order.
The photos are not of 2 different parts, thats actually the issue. I downloaded the STL from Thingverse, i sliced from my Cura and the orange one printed. I then gave the STL file to a friend who sliced it using their Cura and sent it back. When i printed theirs it printed as per the blue model.
1 STL file: top one sliced from friends Cura, bottom one was from mine.
So last night i uninstalled Cura, deleted the remaining Library files and re-installed. No previous profile came up, so that was a good start to a clean install.
I did not install MKS Wifi and only changed a couple of the BASIC print settings. Printer works correctly today.
So i am up and running for the moment, i will make changes slowly between prints to see if i can isolate the issue if it re-occurs.