A lot of what I said was based on talking with the owner via email and/or on phone as well company reps on the phone and email.
My damn evo would not stop whistling. It still whistles. Siebo said "it may whistle but you'll get massive clouds." Nice enough guy, but they basically cant control which ones whistle or not. The Evo bamboo holes are smaller so whistling is more likely was my take away.
To be clear, I told them I wanted a bamboo with the biggest damn holes in it to reduce restriction (like the original cloud) and help it stop the whistling. They said hole sized varied and whistling varied and they did have performance reasons for changing the bamboo. That's why the cloud holes were bigger/differently placed.
In the end, they were comfortable just mailing me new bamboos to install myself but none helped. All of the new bamboos had holes that were also much smaller than the original clouds holes in the bamboo. All whistled to different degrees.
I know they were tweaking things for concentrate use because they kept telling me the changes, e.g., whistling, were better for concentrate and I kept replying that I don't use concentrates.... I only use flower and they should just make a bamboo ONLY for flower use.
EDIT TO ADD email from Seibo:
From: Seibo Shen
Sent: Wednesday, July 6, 2016 7:57 PM
To: [deleted]
Subject: Re: 01.20.14 ebay clouds
[My name]
I looked long and hard and found one but it still whistles. Substantially less than the others but there are none that do not whistle. We had to change some things around for the EVO to use oils and to still get the same extraction with herbs…. just wanted to let you know before you got it.
Warm Regards,
Seibo Shen
Founder & CEO
VapeXhale
They basically said they would think about it... but they never did make bamboos specialized for flower and other bamboos specialized for concentrate. I don't think they have the control in manufacturing. My take away was that new evos need tighter holes anyway, probably to be more effiicient work with the different heater. But thats a guess.
They never did sell bamboos directly... but they should.
And they should sell them specialized for flower use with the least amount of draw resistance possible...
lol.
My 2 cents, and reliving of this frustration... lol