I am not sure whether this is a stupid question or not, but I'll ask it anyway: Do the recommendations for valve clearances change with increasing mileage? From the service station manual, the values for the Cali 1400 are 0.15 mm (inlet) and 0.20 mm (exhaust). But are these still valid for my bike, which has >100 K miles under it's belt? And if not, how would they change? txs.