I'm in East County, but I haven't used my Zaino stuff in quite some time. I use 90%~
Meguiar's professional and detailer line products...and don't miss the Z one bit.
If you want I would seal it with your Zaino (I have some, but it is like 6 years old) and do the prep work with the
Meguiar's compounds and polishes I am more familiar with.
I am on the out skirts of El Cajon and Rancho San Diego. I prefer working from my garage, but also work on a mobile basis quite regularly.
Feel free to PM for more info.