Has anyone else encountered the issue of the KW157FMI engine having an intake manifold pipe what appears to be riveted on? Blew my top end and have purchased a new motor (Same engine Number KW157FMI-2B) and need to take the intake boot from my engine as mine is curved 45 degrees to miss my frame and my new engines intake manifold pipe is straight. Any solutions to get the old one off if needed to? Cheers.

Bike is a Keeway TXM 125 - 015 Reg.