Have you guys tried using weaker weapons when lowering your cars? I use a suppressed micro-uzi and fire it in three round bursts. It would probably take a long ass time to slam anything with armor but I don't apply armor to most of my cars.
As for the meet, I might try to attend but it's 10am for me so I really can't promise anything. I still feel guilty for missing the last meet I said I would attend.