Anyone here have experience with the RCEXL electronic ignition kits for R/C motors? it's a total loss nicad battery powered ignition system with Hall effect trigger, some have advance/regard programming. I tried converting a 372 hotsaw to this system 4-5 years ago and had nothing but problems. Most likely a defective unit, but none the less I got frustrated and scrapped the idea. Anyone have any experience with these or other ignition kits?