Scroll up again and you'll see the solution to your problems- as
Storskogen showed you in the pics he posted above, you need the rubber insulator off the stock pipe (Arctic Cat pn 2612-667). They are only $9.95 if you don't have one, so you could save some headaches using that rather than trying a makeshift setup using heater hose and pieces of flat stock to try to space it up.
He also mentioned and posted a pic of the button head bolt we supply with our pipes- if you bought the pipe used you probably wouldn't know that, but we include it exactly because of the problem you experienced with it rubbing on the pipe. We have them in stock (pn 1139918, $1.26) or if you can source one locally, it's a M8 x 1.25 x 25.
Once you have those you should be good to go, so long as the pipe wasn't tweaked in a wreck by the previous owner- in a worst case scenario you could send it to us to check in the jig if the proper hardware doesn't seem to help.
It's best if you call 651-982-6020 or email
tech@speedwerx.com if you have anymore questions- we aren't on here daily, and it's usually best to go right to the source to get the correct answers quickly anyway. Thanks