hi there im half way through doing a headgasket on my tdi 110 asv engine.ive read not to have it skimmed so im trying not to skim it but where the water jacket has leaked into the bore there is a mark on the head which i dont think ill get out by sanding alone.is there anything i can do or is it a new head job?help is appreciated as im rocking my other halfs 1.0 micra until the golf is fixed!thank u. dan.alzo do the heads off the alh/afn series engines fit and work?any differencs in electrics?