When trying different size jets should I change the primaries first, test and if good increase secondaries the same, test and so on?

The primaries are what you drive on all the time,so you can change them then check your plugs and they will let you know how close you are by the way they look.Secondaries come in to play at WOT so most people use some guess work here unless you run at that strip,then you can check them on a regular basis.

Changing secondary jets at the track has it's problems. Aside from dripping fuel, the jets themselves have the opportunity to find a new home. Any tricks, tips and lessons learned. Putting in those bowls with adjust -a-jet kits is a lot of $$$ better spent.Thanks