sorry Beaky unsure what you are saying. The rtbb ones have 4 tabs. Or are saying that the switch needs a total of 6 tabs? the pbr switch is the old style with only 2 tabs.

ignore my last post, going by the photo you posted it looked like the contact set in photo1 only had 3 tabs so my mistake  

best thing to do is keep the one in picture 2 as a spare and buy another contact set like the one in picture 1

so don't use this one


and buy another one of these for each side