Wow, thats a sweet piece! As a matter of fact I just got a bunch of Koa and should be turning some stems for the LB soon my friend, dont be tempted just do it! In fact I just spun a few beautiful Koa Tubes last night as well as some hella figured Walnut Tubes, very nice pieces. I will have those vape attachments for my wooden brass bats here today, I have just verified them at home, gonna get a couple betas out first of the week and get them to the photographer. What I am told is that you lightly pack the bat, slide the diffuser on and barely hit it with fire from a lighter, the attachment is supposed to just warm the air and flow through the light load in the bat, am told they work really well. I will let ya know!