FLJ, apart from Ms. Sinbad and a couple other rogues, you're one of the few who actually sticks some decent punctuation in your scribes.
But while you're on the subject of motors, when I were younger and stupid'er, and before learning how not to buy a motor, the smoothie in the shop swore that the 540 was rated for 7.2v. "Look... it even says 7.2v on the box!". It did. So that clashes with your statement. But, if truth be known, I didn't believe a word of his so-called patter - or the bumph written on the box. And even though I was skint at the time, and a ten-quid motor meant a lot to loose, I still bought it. A boating desperado HAS to have his motor and he HAS to know how it works, right? So I shoved 7.2v up there.
It died shortly after.
Nope - not being pernickety, it's just an observance of how misleading certain information can be. But from the stuff that I have learned, I'd put my money on what you said already.
Portside, if you've got your ears on, buy that man a drink. Not just for his grammatical skill, but for steering you in the right direction.
Last word to FLJ...
If you don't mind my asking, what swg did you use on that 100-turn rewind?