Hello dog1
When Pen32win was doing his models I also started doing some AA as well, with the Jap guns on my hit-list, due to family/work commitments that went haywire at the time and recently health issues, I never got into the full on modelling of them.
After the SCW repaint project it was going back on my to-do list, which also included the British 20mm Polsten (single & Quad), British 3inch AA gun, and the British 3.7 inch guns (static & mobile), to Pen's standards.
Some encouragement for all of us:-