Thanks for tidying "my all over the place " sentence Mavili. It is actually a request, in other words it is bit softened imperative [command form of a verb] form by adding "lütfen" ......... "yazsın "

So "request" is more appropriate for the sentence.

Well,

I don´t see any difference here. Another thing is that -miş suffix is used for hear and say or learned/noticed things. How can it be a first hand knowledge with its involvement?

Here´s another example:

gidip gelmemek var = there is (as a possibility) no coming back after going (somewhere)

gidip de gelmemek var = there is (as one of the possibilities) no coming back after going (somewhere)

I agree,

Generally "mIş" is used for referring the reported speechs, events., hearing things and being told things.

Imagine an old man called "Uncle Ali ", he goes back to his village where he was born and spent his childhood, after long years. He stands in front of the derelict house where he was born and says to a villager,

- I was born in this house [sighing in a longing voice " Ah "]

The villager comes to me and reports what uncle Ali said to him. And one day I report this to another friend of mine saying ;

Ali Amca doğduğu eve gidip derin bir ah çekmiş --> I was told that Uncle Ali went to the very house where he was born and he said a deep "Oh !" [oh! those were the days!]

------------------------------------------------------------------------

now if we add "de" it wont make a difference in the meaning. [in this particular case by putting "de" the action "went" is stressed ]

Ali Amca doğduğu eve gidip de derin bir ah çekmiş

There are two events here

1. yollara bakmak

2. boyun bükmek

that speaker´s knowledge of the second event depends on hearsay is obvious. Our discussion here relates to the first event.

Anyone wish to offer an alternative explanation to the function of "da" ın the first part ?

Needless to say I hardly understand. It never stopped me from commenting.

I guess the question now is whether de/da in the sentence changes the juxtaposition of the verb with -Ip and the predicate, so to say the target area of the grammatical material of the latter. In other words

I understand tunci answered it with another example:

´I was told both the first and the second event´, i.e. He says -miş affects them both.

It reminds me of the talk we had about negation with gokuyum earlier in this very thread.

Talking about negation, I can´t quite catch this difference:

si++, could you just d-r-a-w it for me?

There is one event but two actions. As it is a compound verb two actions combined with 1.[hidden "ve" in the first sentence "ıp"] and conjunction "da" in the second sentence. However in the second sentence "da" is stressing and the "adverb". [ Nasıl boynunu bükmüssün ? Yollarıma bakarak ]

1. Yollarıma bakmışsın ve hep boynunu bükmüşsün.

2. Yollarıma bakarak [bakıp da] hep boynunu bükmüşsün. [but subordinate clause is obeying the main clause in Tense wise which is reported tense "miş" [both actions are performed at the same time]

Tunci bakıp is already an adverb. - da doesnt make it an adverb. It connects it with the rest of the sentence and it also stresses it.

You are right Gokuyum. Why did I say that way I dont know It is stresses the first action and conjoins two clauses.

It is normal. Dont worry. Sometimes our brain sees things very differently. 

May be too much grammar decreasing the oxygen level in my brain. Abla I blame you for that [Şaka şaka]

Well,

da/de means too, as well. So far so good.

When you make use of it after v+ip, what you mean by that is what you mean with the one without "da/de" is another possibility (among others) for something (you need a context to know the other possibilities/options).