It is not easy to guide people as all the lasers being sold are slightly different.
Have a look at this thread to see is it helps you understand the way the firmware is currently set up. I need to take another look again because the laser stuff in the firmware is always getting messed with. I hope this is current. But as you can see it takes a while to dial it in, but not that it is cooling down here I can put it on my to-do list.