Hi,
I just converted the ACCT to MCCT on both side. Went pretty easy and all the rattling and ticking went away. Good modification. Thanks to this forum I found out how to do conversion.

But... after short ride to my work. I noticed there is a slight whining noise coming when engine is warm and the rpm are just a little over the idle. It seems to sound a little bit louder on the right side.
I tried to record a video and you can hear the whining loud and clear starting 1:10

Is this the sign I tightened one a little too tight?

Try slacking it off a 1/4 turn and see

I opened the bolts a little bit and found the sweet spot. They were a little bit too tight. Now the engine feels more powerful when the MCCT are not resisting engine turns.

But still I can hear this little whining. Maybe it is just normal and I have not heard it before because of the chain rattle.

All of these bikes seem to have a little whine in them, as many Kawi four strokes do. Could be the stator, could be the trans gears. A little is not a problem.

Trans gears would be my bet, I seem to remember from the rebuild that they are all straight cut.

How much do they cost in the US I have just got a pair of ebay uk and they seem decent quality for $32.50 each does that sound about right?

Have a link? Are they like any of these? They list from $21-150 at this link. $50 is overpriced for ebay.

https://www.ebay.com/sch/i.html?_fro...Desc=0&_sop=15

That's the ones the first one on you link it worked out at $65 for the pair but they were here in 3 days if they came from China they would take weeks to come and I would have to pay import tax has well