Hello kev600,
There are indeed inconsistencies between the (port) chadburn, keyboard and modern controls.
Ordering with the use of the keyboard, the chadburn moves with each keypress from stop to standby, etc..., but if stop is 0% of the steam, standby is 20%, deadslow 40%, etc...
Controlling the port chadburn with the mouse, in walkthrough mode to be able to reach the port handle, one can select gradually from 0% to 100%, which is a bit strange.
That is evidently a programming error, it will surely be corrected now the developers know it.
Although it is badly implemented, it doesnt forbid you to set the speed of Titanic continuously from 0% to 100%, perhaps it is unhandy, but it works.
Regards,
Luc