Blend Toolpath Has Small Zig Zags

[jonathanBUCVS]

Depending on how I change the tolerance, I am getting some weird little zig-zags in the toolpath, or linked moves that should probably be cut moves. And If I change the tolerance too much, the toolpath blows up a bit. All shown in the attached file. 

It would seem that Blend would be the correct toolpath for this operation based on the Fusion thumbnail for the Blend operation. I am open to other suggestions

[marcus.toepke]

With your T8 tool it looks good in my opinion.

It seems in your zick zag case, it is the size of the tool!

[jonathanBUCVS]

There is still one small zig zag with the T8 toolpath. Since the part is smooth, I would still consider this an error in the toolpath.

I would also like to address the general case of why this is happening, so I can apply the knowledge to other features. Including both the zig zags and the random parts of the toolpath that change to green lead-lines instead of blue cut lines.