Right guys this might sound a stupid question to some of you but this is the first time iv ever built high performance engine (zetec turbo) so obviously want everything to be spot on.now iv gapped the top and middle piston rings no problem but just want to know about the oil ring.with it being a 3 piece do the 2 silver rings need gapping the same as the top and middle ring? And im not sure if you will see in the pics or not but the gold zig zag ring overlaps itself a fair bit do i just cut this so each end butts together?