Hey, Any of you who run the Trail Tank on you IQ mountain sleds. Is the newer style tank with the rear access hole a must? Do these tanks slosh bad? The newer style is easier to put in an anti-slosh kit because of the rear access hole. I am going to get a trail tank but want to know if it's worth spending the extra $ on the newer style tank. If they don't slosh bad I'll go with the older style Trail Tank. They still have a few of the older style and they're $50 cheaper.