Since we were discussing setting the gear mesh a bit, I thought I'd mention this. I actually posted a method to use for setting gear mesh about a week ago or so, which I saw in one of the magazines. However, I actually tried the procedure last night and it doesn't work. It has you insert a piece of notebook paper between the the two gears, then slide them together and tighten down the engine mount bolts. This method doesn't provide enough clearance. I've still found the best way to set the proper gear mesh is to slide the two together as close as possible and still have the gears turn smoothly when turning them by hand. You can easily tell if they're too tight because the gears will have a grinding feel to them when you turn them. If the proper amount of gap is achieved, you should be able to slide the tip of a needle just barely between the two gears. Proper gear mesh is critical to the lifespan of the spur gear, or both gears in the case where both are metal gears.