2 questions about new build

[LeftRight92]

Question 1:
Just bought an Asus P8P67 LE mobo, and the manual isn't too clear on how the ram slots are paired.
Working away from the processor socket they are labelled
DIMM_A1
DIMM_A2
DIMM_B1
DIMM_B2

Just want to know whether i should install RAM in an alternating pattern, or in neighbouring slots for Dual Channel
I'd imagine the board is very similar to the higher end Asus P8P67 boards, so if you have one of them, let me know how yours is set up.

Question 2:
Installing power supply in case is proving problematic (Coolermaster Elite370)
The screw holes for the supply and the case aren't lining up as the supply is raised about 5mm too high. I believe its being caused by the far sides of the case feet, which protrude quite high into the case, in turn causing the supply to be raised up the crucial few mm.
Thought of maybe filing the top of the feet down a bit, but wanted to see what other people think.
Don't want to RMA it, being out in the Channel Islands would be more fuss and time than its worth

Thanks for your patience with a noob.
LR92

 

[Reaper 392]

generally for the RAM you will want to put it in slots of the same colour, whichever ones the motherboard manual says is best for overclocking

 

[stulid]

Its the same colour slots for the ram.

Which way up are you mounting thee PSU? have you tried rotating it?

 

[LeftRight92]

tried both ways, same problem, too high either way, thanks for the ram advise

 

[stulid]

What PSU is it, I just looked at some reviews of the case and they fitted a normal ATX PSU without mentioning any fitment issues.

 

[LeftRight92]

Corsair TX650 V2

 

[LeftRight92]

selfish bump

 

[olivier renault]

Very odd. the PSU is just standard. You must be able to lower the feet though. 5mm is a lot. Otherwise I'd just grind then rubber feet down.