I dont know whether u have ever heard of a person.
He is Professor(Prof Masood) in UET, An Engineer and keeps heavy bikes, Lives in Bhati Gate, also repairs heavy bikes. its his hobby.
I think he could be of some help to you, if you want to meet him tell me, i can arrange a meeting with him. He has made workshop in his home. (which is worth seeing, u will find BMW 750, many Hondas, Kawasakis and dont even remember other bikes.