I'd remove the globe from the suspect globe holder and watch the game over time.

Check from underneath that the globe holder is not shorting out to anything metal. They are cheap parts - just replace it !

i agree. if you go putting a higher value fuse than what is recomended and you leave it in you are going to end up with more problems later on, like burnt G.I. plugs, bad solder joints on the gi plugs, melted wires or in a worst case scenario a fire.