What’s Trumps?
1
1 
2
2 
2
3 
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1
1 
2
2 
2
3 
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1
1 
2
2 
3
4 
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2 Way Checkback after a 1 NT rebid:
Instead of new minor, you might try this convention.
After 1 x 1 y
1 NT 2 
2
forces 2
which responder can pass or make an invitational bid in any suit or NT
1 x 1 y
1 NT 2
2
is game forcing and artificial
1 x 1 y
1 NT 2 NT
2 NT is a relay to 3
and is the way to sign off in clubs
Immediate 3 level bids over 1 NT are strong and forcing, with some slam interest.
For a full explanation of 2 – way checkback, check out this article by Kevin Collins.
http://www.whidco.com/DBAA/350_LectureSeries/DBAA_2009_2Way_Checkback_Stayman.pdf
or go to the DBAA webpage at http://www.whidco.com/DBAA/
and click on the article 2 Way CheckBack by Kevin Collins

It’s posts like this that keep me coming back and checking this site regularly, thanks for the info!