any body can tell how much low handle can be done without spoiling it!?
I want to lower it as i cant increase saddle hieght anymore!
I can get the photo of the handle part but would it help?
Well, in order to remove weight from your rear end you have to pedal harder, that way your legs carry more weight, they were made for lifting your body after all. Another point is a good fitting saddle. If the saddle doesn't fit it'll hurt. Concerning the weight transfer: I ride my road bike with a very steep seat angle, I have a seat post that is not set back, and I ride almost exclusively in the drops. After some hours my shoulders and arms get tired, as they were not intended to carry this weight. To ameliorate this I can do two things (well, including changing the position it'd be three): Train my muscles or get aerobars. What you should be aware of is: You can (well, you will) fundamentally and adversely affect the handling of your bike when transferring weight to the front.
What do you mean "handle got angled to the left a bit about 1 inch which coudn't be straightened"? What did you try to do? And also "but this time i didn't hit hard and it is still 2-3 inches stem hanging out"? Don't use excessive force on your bike (unless you know what you're doing)!
On a threaded steerer you loosen the head nut a bit (like when adjusting stem height) and just pull the stem out. You then have the opportunity to clean it (and the inside of the steerer), lightly grease it and reinsert it. Then, move to desired position and tighten the head screw. All done. Only thing that can go worng is on on a quill type stem, the screw will sometimes turn the quill (this is probably only relevant for bikes ~25 yrs and older).