Relic, as long as you hold the stick back and lock the tail wheel it won't tip over on you.
Get your taxi speed down a little slower, use differential braking to steer, and if you need to use rudder to steer once you are very slow, ease off on the stick a bit, make small corrections with rudder and once headed in the direction you wish to go, Pull Back on the stick again and lock the tailwheel.
Cheers,
RTR