I'm fairly new to this, and have only been running in cool water until now. As the water temp is getting higher here, (I live in Australia), I'm finding my IV bag is pressurising as the fuel volume reduces. Do I just have to be more careful with getting any remaining air out of the bag, or is it just a warm water problem that I have to work around? MY IV bag is under the motor, so is seeing noticably more heat than a few months ago.

Always a good idea to get all the air out when you fill it. They will swell some if left where the sun can beat down on it. Keep a cover over it.

Ron

Thank's Ron, I guess air can't be coming from anywhere else, so it must be just the extra heat. It's surprising how much pressure can build up before the carby complains.

Even during the winter I have to check the bags. You store them with a little gas in them, well sometimes they swell up. Have to bleed the pressure off them.