[a_alyte]

I know what you mean, I'm currently using a simialr setup! As far as sagging, my setup came w/a metal piece which I installed to an existing bolt that didn't appear to have a purpose. This metal piece extended upward & I placed it in between a rubber piece that wraps around the filter.

So bascially this metal piece prevents sagging & zip ties, & keeps the whole unit from hopping around.

Now I just have to figure out how to create a heat shield?