It's geared too high, and if its as quick as a 10 turn from 10 years ago or whenever you last raced it isn't reaching anywhere near it's potential. Can you make your Laser wheelie with it? If not it's overgeared.
From what I've found brushless is a bit wierd with gearing, if it's under or over geared you just loose all performance. If you can't find a pinion small enough (13 is the smallest I've seen, and that wasn't exactly very round) you can always fit a bigger spur. Also with brushless the speedo's are what gets hot as a general rule, as your motor is sintered it should stay cooler than the bonded motors like the LRP's. As your speedo is 'well hot' thats an indication you are asking it to pull too long a ratio.
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