Evening all, just tried fitting these back onto my nc23, as this is my first project i dont know an awful lot. Engine had been out and has been properly cleaned, put all new gaskets on and replaced all exhaust studs. These pipes are catching quite tightly on the oil filter but will not fit properly at all.

Bit of a mismatch really, however as the bike is to go racing with in Feb when i have my acu course i obviously need a replacement.

Does anyone know what these pipes are off just so i can find out why they dont fit at all.

Many Thanks