Torsten - I just sent off an e-mail to Racing Art in Germany. Hopefully we have an answer for you soon and please keep checking with them.
yokemad - We are working on a lot of things for our site and information. I've been too distracted with so many races this summer and I am focusing on everything here now as much as possible. I hope to have a lot more support news/information soon.
bigbank66 - The speedo stuff can be crazy right now but I am sure as everyone gets it sorted it will be a lot easier. If you get a chance, please post your set-up and maybe I can suggest some things for you to try or your next visit to Norcal.
gijoe64 - I think the gear diff in the rear would be good. I don't think the front would be all that great unless you run it really tight, closer to a spool.