Problems from a sectional swiss

All at imps:

1)  A, xx, AQT9xx, xxxx; favorable, 3rd seat... P - P to you

2)  QJxx, xxx, --, AKJxxx, Unfavorable:

RHO  YOU  CHO  LHO

1NT*  X**   Pass   2C***   *=14-16; ** = major/minor 2-suiter; *** P/C for minor

2D      ???

If you bid 3C, LHO bids 3D, passed back to you - any further action?

3)  Qxx, xx, Qxxx, Axxx, none vul;  

LHO   CHO  RHO  YOU

Pass   2D*    2NT**  Pass

3NT

* = multi

** = 16-18

What do you lead?

Before the solution, some complaints:

Holding xx, KQT8x, Ax, KJT9 at all vul, RHO opens 1NT (14-16) in 3rd seat.  I pass it around to partner who doubles, showing a major minor 2 suiter.  I pass this to LHO who rescues to 2C.  Partner bids 2D in front of me (with Qxxxx, x, KQxxx, xx).  

Holding xxx, AJ98x, x, AJT8, RHO opens 1NT (15-17) and I make the questionable X to show a major minor.  Partner bids 2C, P/C and I pass this to LHO who bids 2H.  

Partner bids 2S on AQx, x, Kxxxx, xxxx.  I would think partner would either pass or double 2H (surely the X is pass or correct... shouldn't 2S show something like 6-1-3-3 shape?)

Holding:  KQJxx, x, x, QTxxxx unfavorable,  I hear RHO open 1D.  I questoinably overcall 2C, hoping to put some pressure on the auction (the side spade length makes their negative doubles awkward).  LHO bids 2H, partner cuebids 3D and RHO bids 3H.  I try 3S, LHO bids 4H and partner doubles.  I don't like it, but there is no reason to bid again here.  Partner holds xxx, xx, AKJxx, Kxx and leads the DA to see:  A98x, ATxx, Qxx, AJ.  He shifts to a club... I think he forgot the auction during the play.  By the way, LHO bid 2H on T, KQJxxx, xxxx, xx.  Probably right, but not everyone would have done that.

So on hand 1, I opened 3D and everyone passed.  I caught partner with Jxxx, xxxxx, Kx, AQ.  The club finesse was on, but the DJ offside in the crossruff, so I made 10 tricks.  Somehow they bid 3NT at the other table, which rolls home.

Hand 2, you are on for 4S.  Partner holds:  Kxxxx, xx, xxx, Qxx

Hand 3, you should lead a spade.  If partner has a weak 2 in hearts, you just aren't beating them.  Partner held Kxxxx, Qx, J, xxxxx.  since clubs are 2-2, you can beat it with the sneaky club lead too, but who would find that?