KTM Sportmotorcycle — I have a major rpm fluctuation problem in my duke 390 2017 version

Address:

Vill+po-gobrapota, ps-bhimpur, Nadia, Besides school playground, Nadia, West Bengal, 741103

I have a major RPM fluctuation problem in my Duke 390 2017 version, I have talked to SS Bajaj many times having this problem but they could not provide any solution, , I have a proper video proof of RPM fluctuation and sudden start off problem in 2 or 3rd gear in my bike but they have nothing to do about it, I have visited Krishnanagar SS bajaj 10 to 12 times they could not solve the problem in any way..My bike suddenly stands in the middle of the road at 30-80 speeds..