I put Motorex in mine, 10W-50, semi-syn. After 500 miles. I use it in my other bike, a Tuono, and the shifting was much better ! Smoothed out the tranny in the Husky also, not that there was a problem before.
Hell, I'm no oil expert, just easy with free advice. In normal riding I wouldn't think the extra 10 points at the high end will matter that much.
I love my TE-610, will like it better after I can quit taking the carb apart to get the jetting right ! Next bike will be fuel injected.
I may try Jim's advice next, but it seems lean to me.
I'm at a 42 pilot, 170 main and a red JD needle from a KTM kit in I think the 4th from top clip slot, 1.5 out on the fuel screw and just under 1 sec. of AP squirt if that helps. (Thanks Jim !)
Other folks are at 180 main, but they are usually the SM version, which shouldn't be any different, I don't know.
Guess I just have to do trial and error until it runs good. One change at a time.
"Have you guessed the riddle yet?" the Hatter said.
"No, I give it up." Alice replied. "What's the answer?"
"I haven't the slightest idea." Said the Hatter.
"Nor, I" said the March Hare.