Hi Jan,
Thanks again for explaining. I was badly educated to enter the OAT shown on that page, I'll study this more.
I made some progress regarding the rollout. I have assigned a left and right brake key and I managed to keep the plane on the runway much better. I think I found the culprit for veering off: upon landing today the nosewheel turned to the left and because of my braking actions and keeping the plane centered on the runway, the front tire blew as it was skidding along at a 90' angle
It was clearly visible on the replay this time. So I'll have to check on the toggle for steering.