For the FT mighty mini arrow that I was building, I needed elevon mixing. The manual for the DXS says that if your model pid is starting with SHTK then you have to update. Mine starts with SHTA. Does it also need to be updated, because when I perform the trim positioning when powering on the dxs that is used to acess preset program options, it does not do anything. Also, I have an 1806 motor as in power pack A. I have a 30 amp esc, so that can also handle a motor from power pack B. However, on amazon I can only find an 2212 935 kv as opposed to the power pack B 2212 1050 kv. Is the difference big enough for concern; will I be able to fly power pack B planes with a 935 kv? I am assuming a 30 Amp is enough for this motor too since the power pack b has a 25 Amp esc. Thank you!