Lou,

I have one of the early Artex 406 units that came with the velcro strap.....I thought about that a bit when I put it in back in 2007.....it was pretty clear to me that careless assembly of the strap could result in less than satisfactory securement. It's entirely possible to screw up the threading of the strap. I've been careful to keep it clean and tight & assembled correctly; however, I do plan on fabricating a positive metal/hardware hold down.

I don't know if manufacturers other than Artex used the velcro strap; and, I see that the new Artex units no longer use the velcro strap.

BTW - When I replaced the battery. Artex has increased the replacement interval to 7 years from 5 years.

Sincerely,

Dave S
KF 7 Trigear
912ULS Warp Drive
St Paul, mn