Vello Warm Bounce Dome Diffuser for Canon Speedlite 600EX-RT

I don't like how the inside of this diffuser has some grabbing enforcement protrusions on all sides inside the dome being Unecessary and risking scratching my brand new Canon 600 flash. Not a chance I'm risking it getting my flash head I just got it out of the box scratched, not today! I got a Exacto Knife and striped out all of them making the inside smooth and free of anything that will cause unecessary grabbing on my flash head finish.if you're skilled with sharp objects not damaging it, I recommend you do the same it you want a looser fit and still holds well after you remove that. If you mess up buy another. I provided a picture showing what I did to it, after removing those protrusions inside) smooth and still fits like a glove and no chance of scratching. I also don't like that it sits flush on the flash head and doesn't have that extra 1/2 sticking out which provides a better light distribution like a mini Gary Fong Lightsphere. As said, It it stuck up 1/2 inch up, the bouncing lighting would be stronger and more spread. Since there's no extra height, being 2mm from the flash strobe it's like only a gel is there with the flash on bounce position. But it does what it's supposed to do , performing 60% compared to myImpact brand that I had for my Canon 580EXII. That has an extra 1/2, not sure why Vello doesn't do the same for the 600 series...