Cycliq Fly6 gen2 bike light velcro mount

I have a Cycliq Fly6 generation 2. It's the one which uses a pair of rubber straps to attach to the seat post.
But the rubber straps keep falling off every time I remove the light from the bike.
So I've created this mount to attach permanently to the light, so a velcro strap can be used to attach to the seat tube instead. Like the Fly6(v) (generation 3, the one with velcro straps).
My seat tube is around 31mm diameter so the ends of the spacer are too, but it should work with seat tubes of di