It's funny cause we pay a room tuner 1000 bucks plus hotel accomidations to do just that.
Considering that setup, you probably are getting alot of low end, but in a really bad way. Monitor speakers are designed to live in an open space. So once you throw in extra factors (walls, consoles, monitor screens, etc) you start having problems.
The best angle for monitor speakers is a near perfectly balanced isosceles triangle (last I was told). The center point being the center of your head. Good speakers give you a wide sweet spot, so you could have them below or above your ear level.
In terms of padding, don't waste your money. They absorb highs, they do nothing for low frequencies. Low frequencies are a completely different beast that require things like bass traps, double or triple layered walls, floating floors....the list goes on.
The best thing is to angle your set up in a way so you can have your speakers out in the open, rather than up against the wall.
As for the kick, thats more of a mixing issue. Low frequencies require alot of boost to punch through a mix. High frequencies are dominant in the mix. So knowing that, you could try bringing up some high end on your kick.
good luck.
