Set tempo problem

[SuperDisk]

There seems to be something not quite right with Fxx Set Tempo. For example, playing the first pattern of the sample song The Murderous Funk Machine (intro), it has a discrepancy. I've attached recordings displaying the difference, with the first channel isolated.

funk.zip

[ISSOtm]

I'm pretty sure the problem is that hUGEDriver has its row timer (tick) count upwards, towards ticks_per_row, whereas fortISSimO instead has its row timer count downwards from wTicksPerRow.

Then the difference is that a tempo change takes effect immediately on hD, but is delayed by one row on fO. The fix should simply be to overwrite wRowTimer at the same time as wTicksPerRow, but I don't know if I can spare the bytes x_x