So I picked up a GTech-Pro RR for $175, but I can't get the RPMs to sync correctly. I set the red line to 6000 RPM and then it asks me to rev to 4000 RPM and then 2000 RPM to do a sync and it doesn't end up reading the RPMs correctly. Did you guys with the GTech have the same issue?

Also is there any good advice for using this device?