I just purchased headers so I could put the lower "street Pipes" on my bike. My bike is a 72 CL 450 Model and the bike the pipes came from was a 72 CB 450. We discovered that the foot pags are now in the way. All the pictures of this bike show the pipes above the foot pegs but , mine seem to be above the pipes, and are slightly in the way. was there a difference in the frame of these two bikes? How do I fix this problem?