We've discovered that we managed to put an out of date version of the code on our website (**LINK**). At least 2 builders have discovered that if you use the code as published, the display only updates once per revolution. This is down to the arcane subject of integer arithmetic. If you're struggling, just change the line which says
int Slots = 90;
to
float Slots = 90;
make sure you get case of characters correct . we will update the website ASAP, in the meantime my apologies for any hair pulling.