We took extra time for the safety systems, I decided to delay the release to get more testing time, I rebuilded moste of the LZB system, it became much better and we are currently busy with our test team to get some harmony between , afb , lzb etc. Also under my testing time I find daily some small bugs. Give us a little bit more time, I’m sorry we didn’t meet the expected release time. we do our best, if you have some wishes for the locomotive feel free to send me emails on our official channels .