Yamaha F150TXR

[Bduck]

I’ve been researching a whinny noise coming from my main F150 Yamaha boat motor. I came across it accidentally when I was looking at info posted thru a boating forum and there I found many threads about a a harmonic balancer.  As I was digging found many folks had changed the balancer with a newer version throughout the years. From 2004 to 2012 there were 4 upgrades from original design. Previous 4 versions were still having same issue which are obsolete now and last version was fix.
These are the part numbers listed:
2004 63P-11500-00-00
2005 63P-11500-01-00 changed
2006 63P-11500-02-00 changed
2009 63P-11500-03-00 changed
2012 63P-11500-04-00 changed
I could have made a career reading thru the multiple threads on that forum from years past but one individual mentioned YouTube so the first video listed in my search was enough to help me. I couldn’t find a part number but did find a 1 stamped on my balancer housing. I took a pic of the balancer housing with a circle around a couple of numbers but just above that circle is 1, that is the only indicator. Next is the YouTube video of a Yamaha F150 making a whinny noise which is the same exact noise mine makes. You’ll hear the difference from old balancer to new balancer, its very distinctive. From the info I collected these balancers self-destruct in time clogging oil system trashing the motor eventually and mine is well on the way of doing that. That's a $15-20g deep pocket for a new motor or more for a $425 part. 

https://www.youtube.com/watch?v=-H3hzP9_sj0