Can anyone help me here... I have acquired a 200 ti twin, replaced all bearings and some other bits... but have found that the timing, on the rear cylinder didn’t conform to the usual cam lock @ TDC alignment. It clearly is opening the inlet valve as it gets to TDC on compression stroke.

Does anyone have any advice/guidance/instructions etc that will help me set up the timings gears...

Any / all help much appreciated. !

john.