It seems like quality control is largely lacking with the Indian after market parts. Some items I've purchased have been OK, but many are not. My personal experience has been that at least half of the Indian parts I obtained for my A10 restoration had to be reworked or even replaced due to poor fit and quality. I try to avoid them whenever possible, but that's not always possible since sometimes there just aren't any other options. I suspect that even getting your hands on a particular part to determine if it is satisfactory does not guarantee that the next one out of the same production facility will be.
15 years ago, most of the stuff coming out of China was of similiarly poor quality, but I have noticed a steady improvement through the years , so perhaps there is hope that the Indian-made parts will get better. In the meantime, however, expect to be frustrated.
Pity to see that old machine reduced to a boat anchor...