1) As to the 5/4 4/5 Major hands. If GF then bid stayman and re-bid 3M (smolen or not up to you) and if <GF then sign off in 2M like standard garbage stayman. when i said standard stayman, I was referring to a pretty standard stayman structure (i.e. 3oM as strong raise of opener's M) 2)the debate on 4M 5m 2♣ followed by 3m, use judgement, it's not mandatory. 3)Also, responder does get to describe GF unbalanced hands and opener can judge the suitability of their hand for responder. 4) the asssumed NT range is 11-14 or similar 5) i must admit that the system is vulnerable to interference however, think of it this way: .......a) the opponents, even if they bid, have no cue-bid available .......b) they can not make a lead directional double for fear of finding out that their suit is responder's suit (i.e. 1NT-(p)-2♥-(X)-p-(p)-XX!!!) Simply put, the opponents also don't know what responder has 6) INV hands with both minors are rare, to say the least. can sign off or GF. 7) 1NT-2♦// 2♥-2♠ is INV with EXACTLY 5-card ♠ 8)being able to bid stayman and sign off in 3m is nice, say partner opens a weak NT and you have: xx Qxxx xx AKxxx or similar, wouldn't you like to bid stayman and see if partner has 4-card ♥ and if he doesn't be able to sign off in 3♣?