Current Projects chat and miscellany

hello guys, i was trying to put a new bottom bracket on my bike but the shell was 66mm instead of 68.. And the only spacer i had was 3mm. Now the chainset is 2mm off from what it was supposed to be and the chain makes some noise.. Is that really bad? Do i need to find a proper spacer or is it fine to leave it as it is..?

i don't exactly follow the math, because it sounds like you can get a chainline X+1mm and that really should be perfectly fine... eitherway, i would measure it carefully and fix it.