When I dismantled the steering head the original races were in perfect condition. It made no sense to replace them. I packed them with grease and sent the tapered bearings to Pete as remember. I felt he could use them or give them to someone who'd need them.
I have used tapered bearings on other bikes and when necessary I believe they are a better choice with the larger bearing area.
I just take them down until there's no play but can be freely turned when the steering is turned.
It's easy enough, pretty obvious from rocking the bars to feel that there's no play and that the steering turns freely.