The national pass rate is about 48 to 50%. C & G would like it to be higher but.....
The longer it takes to receive your result the better. Each paper does the rounds of External Verifiers and they all have their own ways of marking the papers. No two of these guys will give PRECISELY the same marks for any one question. One trainer told me that the marks assigned to part 1 are never guaranteed; the EV's (some of them) would say "of course he should know that" and give two marks instead of the three. They will deduct marks if, in their view, you have not used the terminology strictly to the letter.