Ive been running a pair of Innovative dual bb 80's a couple of weeks ago I noticed that one of the turbos was beginning to tighten up a bit. No problem Ill send it back to Innovative. Im having a devil of a time with correspondence with Innovative. Ive called them several times and left messages and cannot get a response. I did finally get a hold of them this past friday and was supposed to get a return call with the status. Im scheduled to make exhibition runs in a couple of weeks and need to get something going. Has anyone else had experiences like this with Innovative ?