Spark plug change... suggestion required Hi All, As my ride has crossed 50K kms now. Got some cold starting issues. When I consulted the same with Pandit Auto, they confirmed the replacement of the spark plugs. As per servicing schedule it should be changed on 60K service. But the trouble starts 10K before. No issues for it. I'm planning to replace the spark plugs with iridium spark plugs. Anybody from TFi has done the same before? What is the advantage over conventional spark plugs? The price difference is huge between iridium & conventional spark plugs. But really these are worth? Please let me know your suggestions.