Bajaj Auto — bajaj discover 150f 2015 model

Address:

Kolkata, West Bengal, 700137

I am using bajaj discover 150f 2015 model bsiii. My bike driven 20000km. For middle chember engine oil leak i went to near authorised service center for fix it. They fix it well. No issue about oil leak problem now.
But after that i am facing vibration in clutch and gear problem. Again i went to service center and they told me that you have to change the hole clutch and chain sprocket. I am facing this problem just after fix my bike's engine oil leak problem. Before this my bike was totally smooth and well.
For middle chember oil leak they open my bike's hole engine and oil also for fix. I think they did't assemble my clutch well. And i just spent rs.2148 for fix oil leak problem.

Service center name - kalpataru automobile, maheshtala kolkata 700137