Exhaust header flange

Quick question: how well does the flange on the header pipes need to mate with the cylinder? Just installed the new header pipes but the flanges on the new (but used second hand) pipes refuse to connect to both mounting points and I didn’t want to force it before asking here first. Essentially no matter what I do there remains a 2 or 3 mm gap on the mounting point closest to the center of the bike (on both pipes).

Also what is the torque value for the nuts that tighten the header pipes to the cilinderhead? I couldn’t find it in the workshop manual.

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Exhaust pipe to engine retainer is 25nm in workshop manual (in exhaust section of torque)....Not sure why it should completely close gap as expect you'd need some gap to put compression on gasket

Thanks! I just assumed it needed a super tight fit, good to know not going rambo on it was the right call.

Okey, everything is back together apart from the lambda probe. Does anyone happen to know where exactly the lambda probe is plugged in? Need to unplug it to be able to properly torque it but the cable disappears into a thick loom.

Have a look behind the starter motor. Should be a plug there.

Thanks, found it and all done. They do love using cheap tie-wraps at Mandello to attach everything cable-like, don't they?

One final question since I want to do everything 'right', does anyone know the torque value of the 2 hex bolts that attach the startermotor to the crankcase? Are they the "transmission side flange stud bolts - M8 x 75 (2) under Crankcase which should be torqued to 35Nm?

I don't think the starter bolts need to be so tight, I would just pull them up tight with a short wrench, to put a number on it say 20Nm