DSM2 and DSMX works fine and your JR12 is one of the best made TXs ever so stick with it, I owned and used a DX12 on DSM2 for years in fact since there day of realise here in the UK.I did not once have a hold or glitch wile flying all types of airframes including several Jets, After hundred's of flights its sticks and gimbals were as good as new when I sold it last year.What was my biggest mistake ever was selling it then buying a DX18 just for the sake of more channels,In the three months using the DX18 I had two jet airframes and two smaller airframes die big time.The DX18 Tx has since been replaced after inspection by Horizon FOC no quibble about two months ago.One of the jet airframes was flown on the JR12 for over a year before dyeing after just two flights with the DX18, All the other airframes were on the same setups and flown lots on the JR12, all failed on the DX18.I feel wit a JR12 every Tx seems to be well made but perhaps with Spectrum TXs its a bit hit and miss? Due to a total lack of confidence in the new DX18 TXs I could not bring myself to use it again.My currant Tx is the JR XG11 bought on a Dave W recommendation, 80+ flights later no more mishaps, JR may be a bit more expensive "£9 for a satellite lead!"But I don't mind too much as its way cheaper than the thousands of pounds in airframes the DX18 cost me.