Flo-Flex bushes

Hi has anyone fitted these to the rear beam of a fiesta mk7

I bought a set, they come with the plastic bush, a replacement nut bolt + washers and a metal tube that fits inside the plastic bush

Issue with the set that I have bought is that the bolt is a very loose fit inside the tube, I would say the internal width of tube is about 1-1.5mm too big for the bolt

Anyone else had a experience of these bushes for the fiesta rear beam