Grid values should have 'custom' option

[tbyunomi]

You can already change it.

You can change a lot of the sequencer options in the console. This can be useful to go beyond the values usually allowed in the UI.

Grid
setGrid(value)
Changes the size of the grid. The way the value works is a bit confusing: it's the number of grid lines per time unit (per quarter note). So a 1/4 grid has a value of 1, and a 1/8 grid has a value of 2. You can use this formula to work out the value: value = 0.25 / grid. No undo/redo support.