Hello Have the engine of my 1989 305 TPI had to be drilled and honed in excess. After the installation of the pistons there were slight running tracks at the positions of the oil stripping rings (stock). The tracks are not yet noticeable with the fingernail, but I think when the engine is started that drives in the place lower. Does anyone of you have experience in reassembly of engines ? Can one recognize after assembly and a few revolutions at all no running tracks in the cylinder ? I have strictly adhered to the instructions during assembly. The resistance when turning the KW is also within the frame (max. 40ft P)