Yaser Jee,
We will not let you abandon this project ..... 
When you are working on any older project, this is how it is .... "kaam ke ander kaam". Look at my project .... Oil leaks have developed after all the work was done. I have to re-do my job but this time with proper genuine spare parts. If you wanted a trouble free bike you should have got a Honda 70, used it for a few years; throw away .. buy another one.
Another lesson to be learnt here is not to trust your project in the hands of a "mechanic" unless you trust him or CLOSELY supervise him. just look at what has been done by the previous owner/mechanic to your project :o. Brazed camshaft, ruined/broken bolts, leaks, bad engine noises...
They say that when working on any project, it gets bad before getting better. At this time you are going through the bad phase. Just take your time and go step-by-step. Remember never to take short cuts. Short cuts always have a habit to come back and trouble you.