Folks I have a troublesome issue that seems pretty severe - this is a three-month old quartzite backsplash right above our range, where I cook multiple meals/day. I see that we 'should have' used 511 Porous Plus, and that maybe our fabricators/installers were subpar, and we're thinking that the hood is actually the issue - but what I actually want to know is: How can I solve (or improve?) this situation? And replacing is simply not an option. Thank you!