Unfortunately, all quite "normal" for that bike . . .
The 1300GT introduced some improvements to those areas. The 1300 has a completely redesigned top end and airbox/idle control valve which helps, but can't be easily retrofitted onto the 1200. The newer 1300 clutch can be retrofitted to the 1200, but it ain't cheap . . .
More good clutch squawk discussion can be found at this link
On the fueling issues, some guys have had good luck installing a Booster Plug
which tends to smooth out the on/off transitions and stalling. Or else you have to go with a full Power Commander
and get it dyno-tuned.
But the first thing you need to do is make sure you have the cam chain jump guard and latest cam chain tensioner. Check with your local dealer to see if those were done on your bike. If not, get it done, as it may well save you from a munched engine . . .
More cam chain info can be found at this link
Also, have a read through this thread
to learn more than you wanted to know about the K1200GT.
If you can sort out these issues (or learn to live with them), then it really is a fine bike, honest.