Ruling #1:
West opened 1♠ in third seat, North overcalled 2♥, and East doubled, alerted by West. South asked and was told this was a "support double." Thinking E-W had a fit in spades and therefore North was short, South raised to 4♥. West bid 4♠, and South persisted with 5♣, North correcting to 5♥, doubled by East.
Before the opening lead, North asked again about the double, and now West admitted that it was a negative double, not a support double. The TD was called at this point.
Result: 2 down, 300 to E-W. Do you ad....oops, we have new Laws now: do you rectify?

Relevant facts to consider (if you wish):
--South is an experienced player getting back into duplicate after a long absence; relatively unfamiliar with support doubles and other newer conventions.
--All four are fairly good Flight B players
--result at the other table: 4♥ down 1, a swing of 5 IMPs unless the score here is rectified.
Ruling #2:
This auction begins with a fourth-seat 1♣ opener by North. Two passes follow and West re-opens with 1♠. North doubles and East redoubles, showing a maximum passed hand with spade support. South bids 2♣, West bids 2♠, and North competes to 3♣. East breaks tempo and passes, South passes, and West bids 3♠, setting the "DIRECTOR!" sirens off. You say what you always say: play on and we'll make a judgment later. 3♠ is the final contract and makes eleven tricks for a push. Looks like 3♣ is probably two down if North gets to play there. Do you rectify this one?
Relevant facts:
--EW, as you will have guessed from the auction, are novices. Both agree on the meaning (shown above) of redouble in this auction.
--North is a local expert, South a decent but volatile client type. (It's anyone's guess who's paying and how much for a simple club game.)
--if you give some players the East hand and the auction without the tempo break, good players will pass, bad players will bid 3♠. Those whose status is, let us say, pending, are about 50-50.
