bought a standard sito exhaust from sip ,i also chose one of the manifold elbows from sip,both bits are stated for pk 125 yet the welded studs on the manifold elbow are too close together to fit through the two holes in the exhaust ... what the heck has gone wrong ?? cant see any other manifold that would be different ... still waiting for a response from sip but nothing as yet.. summary - need matching manifold for exhaust,is that too much to ask ...any help appreciated cheers.