autoset: I personally have not experienced what your mentioning and I haven't heard about this. I'm sure there is a reason for this but you will need to figure it out. The first thing I would do is to change the Deans connector on the pack as we have seen some connectors that fit loose which would increase the IR. It's also a good idea to bend up the springy part of the male connector once in awhile as a tight fit will keep the IR as low as possible. I would then try a different motor. If that doesn't do anything I would borrow/change speed control.