RE: GO .25 Breakin in (heat cycle) F-UP!
I'd be more worried about your back wheels not turning... [X(]
But seriously, I wouldn't worry about it too much.. One, 267 isn't all that high.. I sometimes think the tolerances of nitro engines are higher than the narrow parameters we try to impose on them.. I've had engines crap out early that I babied, and a couple last pretty long that I totally abused... Two, nothing you can do about it now.. And three, just fatten it up and start again.. It's probably fine..