Defective Modulators falsely submitted for payment will be discarded. Unfinished product will NOT be accepted. It does not pay to do repairs. If the assembly job would be as easy as placing parts on a circuit board we would not be trying to find assemblers. A machine could do it.
Circuit boards use hundreds of transistors.
This job only requires 2 transistors. You must pay attention when you assemble or the job will be a failure. No one can help you try to find the mistake you ve made. Best if you use a large magnifier. Some contractors discard perfectly good Modulators thinking that they are defective.