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Everything about touching the glass on the bulb is true. The real indicator that you have this issue is that the glass on the bulb will have a very big blister where you touched it after it has been heated up.
If that is not the case, I would reccomend going back to the OEM bulb. When I worked for a honda dealer in my early years in the motorcycle industry, the goldwing (GL1500) would destroy aftermarket H4 headlight bulbs. The reason is that not al H3/H4 bulbs are created equal. The OEM honda bulb has an extra support in the middle of the filament to stop a harmonic vibration that was known to kill the bulb. It was a common problem because nobody wanted to pay the 50 bucks for the honda bulb, but it cured the problem 100% of the time.
Take a look at the bulbs side by side and you will see the difference.
Hope that helps.
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