Thats what I used, come of with no problemsimpact hammer with the t40 on the end
flat screwdriver/sharp chisel and a hammer
just tap them round, easy
dont need to be replaced, wheel holds the discs on
nopeI was wondering if they needed to be replaced, I got some new screws with the discs. If they fit ill wack em on. Good to know i dont definatly need them then?