If 7 line not going to receive R188 . by the chance 6 line riders will complaing. Only I can as Second Avenue Subway been built & the line been put to service then it would be different story than 6 line would give away R142A i am very sure. As i know 6 line very heavy crowded on east side between Harlem 125 street to 86 street - Lexington avenue lack of ridership. why not take the R142 from the 2 line. R142 ( bombardier of 2 , 4 , 5 line ) were never tested on 7 line. so excepted complained R142A of 6 line sending to 7 line. Why not tested the R142 Bombardier to be tested on 7 line . Never be tested as of yet. i am sure R142A will fail again 80% sure When last time ran on 7 line Third rail problem. last time 7 line had R142A #7731 - #7810 ? in 7 years aho. I maybe wrong some should know.