Regarding those who preferred the no longer available RCexl A-01 version ignition compared the A-02, you might like to try the RCXP / RCAME ignitions sold by RC Extreme Power. These trigger and act very much like the A-01 ignitions with some improvements. These have a noticeably hotter spark and at low speeds, they quickly trigger a double spark that seems to improve idle performance and smoothness. These are also a bit more compact in size with lighter weight for easier installation in tight areas. I've had several in use for a number of years now and all have been flawless. Good product that I recommend a lot.