Well I recently managed to overheat a track joint with the high current from my Live Steam controller. Result was a melted sleeper at the joint, which increased the joint resistance thus killing the system - tripping out. Replaced affected track - sorted. Currently testing a modified remote control analogue sound van for added features; working well though a bit of a challenge to get the 'chuff' to match the loco speed; the Live Steam voltage being relatively constant but subject to interruption from controller action and/or dirty track, I have elected to use an on-board power pack- good job I have two control hands! Derailments at points have been sorted by using express points and removing 50% of my corridor connections, so now only one end per coach, which just means more care in assembling a train.