How do start up from a cold start in realistic mode?

[justme262]

I am trying to figger out the hurricane mixture...
It seems to be linked to the throttle. I can only increase the mixture when throttle has been opened ... and if they are both open and I lower the throttle the throttle lever pushes the mixture lever down with it. Looks like it is designed to link the two settings. But it seems to be buggy and sometime the mixture lever moves due to the throttle movement but the actual mixture setting doesn't change.