The initial review of the McHenry coupler [NScale Magazine Sep-Oct, 2008] was promising. But several areas need to be further explored. First and foremost, will they stay coupled on long trains? That is, Ntrak size trains of 100+ cars? Second, will they come with a "T" shank? [a lot of applications there]. Third, will they come with different length shanks like the MTL couplers? Fourth, will they come with a coupler that will fit the MTL coupler box? [I tend to break a lot of couplers just transporting my rolling stock.] In addition, I would like to replace all my Unimate couplers that allow close coupling on ABBA F units with a fully functional coupler that will also allow close coupling. The same with replacing the Kato semi automatic couplers on my passenger cars with fully automatic ones.