Hello Mr Robison - another question if you please................

I have just purchased another beautiful little Saito, this time an 82a. I noticed in the manual (yes if all else fails read the bloody manual) that they say to avoid using castor becuase of the high exhaust temps in four strokes.

I have been religiously using 5% castor for years - have I done/risked damage?

Cheers from Down Under [8D]