What are you doing to stay in shape? Do you have a routine or just hope for the best? I'm a big believer that stopping causes rustNot being familiar with how the traffic flows in a city can be a bit taxing, IMO less taxing if you have been able to stay in shape- physically and mentally. You can be the among the best of drivers but you need to catch the rhythm of the traffic to really negotiate it.
Training is more than physical, it is mental too. Just being aware that the vehicle in front of you has an out of state plate can tip you off that there is a chance for "less than smooth" vehicle operation. It's simple things that can make the difference, like recognizing the plate or even putting your sock on while standing up- helps maintain that 'ole balance.
I don't think Dougie Lampkin is having trouble with balance-
Having a trials bike looks like a good way to do strength, agility and mental training.
What are you doing?
OM