I completely forgot I haven’t updated my sig! I’ll add the specs here :Sig space specs can and will change over time, rendering this thread and their suggestions moot to the end user in the same boat as you're in now.
You also forgot to mention the make and model of your motherboard. The reason I say this is due to the fact that your card seems like it should be seated higher up on the motherboard's PCIe slots. Another thing is that you can pick up cheap support members off of Amazing, like this;
I’m pretty sure that won’t fit between my gpu and the fan below it