Another thing with the battery problem is you're using a timed charger. It won't allow you to get the best punch out of your batteries since it might only charge halfway. Look for a peak detection charger. Go to greathobbies.com to look at prices in canadian dollars. They are in Canada, so you don't need to pay customs. If you are good with soldering, then by all means switch to deans. if not stick to the tamiya plugs.