Hello everyone-I have a Taurus model-66 that was purchased in the mid 90s (Brazilian made) and it has very few miles on it, about 600 or so rounds. The thing is that is seems to misfire/not fire quite a bit. I inherited this gun from my brother who just got sick of having to deal with it and disowned it. Does any body have any suggestions or experience with this type of problem. thing shoots great when it goes "boom."!!!! Also does the lifetime deal include these older models?