I don't lie when I have a bid available. So, even with all concentrated in majors I open or I rebid 1NT. I don't know if it is right or wrong but it shows HCP and shape to partner. If, after that, I'm in 3NT my partner will bring some HCP and they probably will be in minor. It is impossible to say that the 3NT contract will be inferior to a 4M contract in a moysian ! Alain