Just received my latest filter kit from Geno's. Everything good as usual, but the fuel filters are different from the ones I've used before. The old ones were red plastic on top and bottom and had o-rings separate... the new ones are black with integral o-rings and the filter itself looks a lot smaller. I double checked with Geno's and they assure me they will fit, so I believe that... but am concerned about the filter looking so much smaller. Has anyone had any issues with these? Different change interval or anything like that? Thanks in advance.