Home built has no bearing on anything a Ranger has authority over.
Print out a copy of the flowchart and carry it with you.
Ask for a supervisor if that officer does it again. Plan to be out there for a while waiting for things.
Once again, we're in CA Bill Season.
There is no value at all complaining or analyzing or reading tea leaves to decide what these bills really mean or actually do; any bill with a chance to pass will be bad for gun owners.
Let us simply oppose them all - write, call, attend meetings with legislators and tell them they're wrong.
The details only count after the Governor signs the bills.
Not a lawyer, just Some Guy On The Interwebs.