Ok so I went to Iqbal shahid sb yesterday (Saturday) around 11 am in the morning for a tuneup after the carburetor overhauling job. Much to my astonishment and excitement, ISS had provided me a very clear brief and estimate of what he was going to do with my car and what would I get out of all this once the job is done. Before proceeding, he sought all the consent from me with very clear deliverables so that we are at the same page by the end of the job.
Despite having a few helping hands and sidekicks, the guy did each and every step on his own and even if he did give the autonomy to his helpers, he would overshadow them so that no blunders are made. The work was performed very neatly, I REPEAT very neatly. In all these years, I had never seen a tuneup of this sort. All the parts were throughly cleaned and serviced, the tappets were adjusted with utmost precision and tuneup was done with the most possible calculations and detail I had ever seen.
The tuneup was quite complicated, yet the pro made it all seem like a convenient one. All the fuel lines were replaced to his satisfaction, the fuel and air filter was replaced.
I simply had to park my car and grab a seat at his shop and enjoy the sunlight. He had undertaken the arrangement of the spares of best possible quality. Yet I was duly updated on every move he made, without me even asking for it.
I was done with it within a very short span of time and I was asked to leave once the car has been tuned to ISS's satisfaction.
The least I could say about the quality of the tuneup is "I've owned a margalla for 6+ years, but I've driven one yesterday onwards only"
The charges were extremely fair and justified for the amount of time, effort and dedication put into the job. This man takes pride in his work which is evident of his skills and confidence.
@capsat bhaiya, tussi great ho. Thankyou for referring someone who has a solution to technical issues!! 
P.s. it is not over yet. I am due for a visit again day after tomorrow for a post tuneup assessment of the car once I've covered some miles.