It's nice to get these tips, working systematically and photos do indeed make life easier. So I'm going to pay extra attention to this. I normally trust my memory. But my gut feeling tells me that I better not do that.

I have studied the link and am impressed with the work you have done on it DBM. It shows decisiveness and a lot of time spent.
I lookt at your flow work and and how you approach it. I've already watched quite a few videos.
But it's better to see what it looks like on the savage.
I have an idea now of how I want to approach it and try to keep it simpel and affordable.

I am now on the lookout for a drive shaft.
And I realized that there are 4 and 5 gear engines. So the question that came up is, are they both the same?

That would make searching easier because I see that sellers never include data.

Hi  DragBikeMike

for finding and posting the link.
I skimmed the topic. And study it later.

The world of 4 stroke tuning is opening up for me and I am using all my free time to gather information about it. I saw the name David Vizard in your text and I completely absorbed that YouTube channel. Nice that you also get inspiration from that sorce.

My previous Savage had a 4-speed engine, which I thought suited the Savage better. and in my opinion the gears were also quieter.
I found a 5 speed axle, but this man also has a complete 4 speed transmission. Does that fit in a 5 speed engine? Or are the crankcases also different?

4-stroke tunning is much more fun than tought. I,t fits in nicely with my masinist hobby.
I have designed a device for drilling out valve seats and drilling the hole to size for bigger ones. It can be used in a drill press. When it is finished and tested I will post the photos here.

Have a nice weekend.