This is admireable. With limited machinerry repair and measuring equipment. But judging from the way the engine purrs they must have done an admireable job.
If we compare the Western repairs:
1. Proper use of measuring tools: torque wrench, roundness gauge, calipers
2. Clean workplace
3. Proper lubrication
4. Plenty of helpers in Pakistan
5. Westerners would always go fornew complete assemblies which undboutedly are more expensive
With limited knowhow and equipment these workersk/craftsmen have done a wonderful job