lol. you were posting at the same exact time I did and my browser locked up. I am using the pro that I had on my provari. it works because I have a vari-flow under it for 510.otherwise it will not fit on the hana. even if it did the flow would be blocked so you need some type of variflow on it. it does not look great but it works great. there is a gap because I headed hana's warning not to crank it tight.

