@mustansir44
Jazak Allah Bhai, your Khyber's progress is going very good, reason behind is of course yours & your brother's detailed interest, effort, seeking knowledge, gathering information, listening to others (Big factor-Big impact) & finally your Research habit in microscopic way 
I will suggest you to write Log/diary daily or weekly from this stage as you will forget many small/minute details later.
Which oil viscosity are you using in your Gear ? If i remember, you have also overhauled it from Sagheer Centre. Apparently, your engine built seems very excellent work, good and strong with Quality parts as well as Quality machine works(Here credit also goes to your that educated machinist too who has openly awared you about the work and did not hesitate to share information with you people as a customer/client; Share their details here too for helping other pakwheelers)
Similarly, do good quality work in your exhaust system work as well as Suspension system after good research. Also let me know if any item or parts or service is required.