Iam a loyal Cen owner and I never deal with Cen directly. Ibuy most of my parts form ebay or other online R/C retailers. I onced ordered some screws from Cen thatI needed for my TR Arena. The customer service rep took my information and credit card number...Long story short, I never received the screws I needed.Lukily I found some screws that I was able to use but they were just a tad long and I dremel them down to size. I canceled my Cen order.

I think contacting them through a phone call will be your best bet. I'm sure they get hundreds if not thousands of e-mails daily and I know they don't and can't respond to all of them. I would call Cen and ask to speak to Ken personally.