Before yesterday I didn't know there was a yamanube or an x-h20 so why I didn't start here.
I google'd for the template a few weeks back and since then had read a couple of performance books and from what I can tell the shape of the port can have a pretty big impact on the behavior of the motor. Also, I've got some folks telling me it looks like a ring eater and to ask around to see if anyone waves me off of this template. I have some spare parts handy so thought I would give it a try and am not worried about breaking some stuff.
Also, I wasn't sure how to do a mention here.. #yamanube..
I'm hesitant to say who exactly made the template but it is from a website that sells them. If it works out and I'm happy with it I'll for sure share the name with appropriate accolades.
Any recommendations appreciated..
Thanks again!