Yeah, I took the inserts out and just slid them over the standard droopy pipes. One pipe only has 2 screws though, as I couldn't screw the 3rd in unless my car was on a ramp - was too difficult to get to!. They seem secure though, pleased with the result.
I could only use 2 bolts in 1 of the trims as well, the missing bolt was too close to the other