I have a 1987 CBR600F-H (US model) with erratic sparks coming off the left HT ignition coil. Coils, HT cables and plugs are new. I borrowed an oscilloscope and checked the signal from both the pulse coils. For the pulse coil trigging the right HT coil the wave pattern looked sound. The wave pattern for the other pulse coil was very erratic and compeletely different to the other. I'm now looking to replace both the pulse coils. There are a lot of used pulse coils on the web. If possible I want to have new pulse coils. Anyone that knows where to buy these coils? I'm also looking to replace the Spark unit (ICU). What type of Spark unit do you recommend as a replacement to the original Honda unit that I believe is obsolete? Thank you in advance.