If you double certain sign-offs (usually notrump ones), they will often remove to other, inferior contracts even if they are cold for the one they are in. I ran up a bidding table to test certain scenarios in which they will do this. At the table I maintained west with 20-21 points, 4 spades, 2-3 hearts, 2-4 diamonds, 2-4 clubs, and east with 6-7 points, 0-3 spades, 4 hearts. [hv=pc=n&w=sak75hkj6dq76cakt&e=s92h9852dat9cq843&d=n&v=0&b=1&a=ppp2np3cp3sp3nd4s]266|200[/hv] South doubles, and west immediately removes to 4♠ instead of bidding 4♥ which is a garunteed 4-3 fit or just passing. Sometimes west will bid 4♥ or pass, though. Very occasionally east will bid 4♠ after west passes. (with 3 obviously) If south does not double, west will always pass. A similar thing happens if west opens 1NT: (changed west into 15-17 points and east into 10-11) [hv=pc=n&w=sakqthaq4d854cqt2&e=s5hkj72dkt973ckj8&d=w&v=e&b=16&a=1np2cp2sp3nd4sppp]266|200[/hv] [hv=pc=n&w=sakj3ha84dkt7cq96&e=s9hqj92da43cat854&d=w&v=e&b=16&a=1np2cp2sp3nd4sppp]266|200[/hv] With less concentration in their suit and 3 hearts, they often bid 4♥. With neither they pass, and easy may or may not bid. Other contracts also have this problem. [hv=pc=n&w=sak86hk2da954cqj6&e=s52ha986d3cakt987&d=w&v=0&b=8&a=1np2cp2sp3c(5+%20C%2C%204%20H%2C%203-%20S%2C%2014+%20Total%20Points)p3nppd4dp5cppp]266|200[/hv] After the double, west bids 4♦! and east wisely removes to 5 ♣, for a low score. Please fix this.