You do not say what area you are in but you can still get the spark generator,expensive though think I paid about £70 for one last year
Most boiler spares places can get one for you, potterton will not want to know as they class this boiler as obsolete
although these boilers were very good please be carefull how much you spend on repair as parts are expensive and repairs can mount up very quickly
Also anyone with these boilers please get a carbon monoxide disc and place next to boiler,(pennies from diy store) as fan on these boilers pushes fumes in to room if seals on casing fail or casing corrodes at back from bad joints, where as all modern boilers would suck them out
tony, March 2008