After feeding the Mosquitos even more it was determined that this system would not work with the gasket given the size of the pipe and the new gasket. Removal of the old gasket was made easier with a hack saw. System sounds nice. The only complaint I have is that Delkevic does not send the nut and bolt for the mufflers support strap.
I didn't use the re-use the gasket (it came off easily) or use the included gasket-in-a-tube. No leaks, I was just careful to put the bands over the sealing end of the flanges. The sound is amazing...toss that baffle.
Was your bike new. That gasket on my 99 was not going anywhere. I do like the sound, nice idling rumble. My wife was a little concerned that I might wake the kids at 11pm last night after she was installed and the mess cleaned . We had some extra fun with the retaining grouse t for the tail piece which somehow fell inside the frame and had to be fished out. I have not tried it with the baffle removed yet.
You need to take off the old gasket; I had to cut mine off as it was well stuck to the header. The Delkevic mid pipe should be a snug (not tight) fit onto the bare header, and I smeared the red VHT silicone that they supplied onto the bare, cleaned header surface before slipping the mid-pipe on. Best to leave the clamps a little loose and give every thing a good wiggle to get it lined up properly first. You might need to rotate the mid pipe a little to get the centrestand stop into the right position.
Thank you for the feedback. That is exactly what I ended up doing. Also made sure that I washed them system off very well before firing her up to make certain there was no sweat, body oils or residual gasket goop anywhere. Liking the sound, can't wait until it matures a little with some carbon.