Beards and Moustache

Q: I am keeping a fist length beard Insha Allah as it is wajib. However I want to ask a question just out of curiosity regarding trimming the beard slightly shorter than a fist. Most Deobandi Ulama say it is Makrooh e Tahrimi, and if done continously it is a major sin. However in Shah Hakeem Akhtar Sahib's book it was written that to cut even a few millimetres of the beard shorter than a fist is GUNAH KABEERA (major sin)? So do you agree with Hakeem Akhtar sahib's statement?

Q: Which one is more close to Sunnah shaving the mustache with a razor or trimming it with scissors or trimmer?

Q: 

1. Is it sunnat, waajib or fardh to keep a beard?
2. When I keep a beard it only troubles me. I keep scratching, rubbing (even in salaah), and applying lotion. Is it permissible for me to shave?

Q: Could you also inform me where does the beard starts from? I often face this dilemma when cutting my hair (head)?

Q:

1. Did Nabi (Sallahu Alaihi Wasallam) ever trim His Blessed beard?
2. If not, how is a fist lenght beard an emphasized Sunnah?
3. Which is more rewarding; a trimmed fistful beard or a completely untrimmed natural beard?
4. On what basis is it sinful to trim (not shave) the beard less than a fist length (and not resembling the non-believers)?
5. Is there any Narration that directly prohibits trimming (not shaving) the beard less than a fist length?
6. Is Miswaak, wearing a turban on the same level as Sunnah, higher or lower, in comparison to having a fist length beard?
7. Is a person sinful if he does not use a Miswaak or wear a turban?

Q: Is it allowed in Islam for a male to neaten the beard (NOT CUT) while it is still growing to a fist length (Not yet a fist length) as I am still in my teens and my beard has become extremely wild which is not exactly 'in my opinion' what Islam teaches. To me Islam teaches dignity in portraying ourselves to promote Islam rather than be seen as primitive and uncouth. 

Q: I would like to know from which point on the face should the beard be grown to a fist length. Example, should it start from the top of ear, or from under the earlobe, or mid ear etc. Also, is keeping the beard to a fist length fardh or sunnah?

Q: What is the shar'iee beard length and how is this proven from the Ahaadith?

Q: Is there any authentic narration which directly and emphatically mentions that trimming the beard is a punishable sin? How is sin and good determined in Islam? Is it Haraam or Makrooh to trim the beard? Did Nabi (Sallahu Alaihi Wasallam) ever trim His Blessed beard? If not, how is a fist lenght beard is an emphasised Sunnah? Which is more rewarding a trimmed fistful beard or a completely untrimmed natural beard? What is the ruling if one trims before it reaches a fist lenght? On what basis does a person continue to be sinful if he trims his beard before it is a fistful while trimmimg after a fistful is not sinful?

Q: Is it permissible to shave the moustache completely off?