Turn the traction control completely off, put it in manual mode 2nd and start roasting them, don't push the throttle right to the floor though, then when they are good and warm you should be able to shift up, again only like 3/4 throttle and don't use diff lock or traction control kicks in
I am on my second mishimoto and it just started leaking as well. At least they are lifetime warranty just the pain of changing and replacing rad fluid. I wish there were a better answer. But I believe it is the flex in the frame.
We will be out Friday to Monday. And it's really good I've had it for years just keep putting it on new phones and tablets with no extra cost. You can also put it on your computer and link it to your device to put staging areas and attractions in
I use viewranger on my phone, bought the Canada topo map, I just mark where camp is and don't use the follow me part. You can download maps before you go out so no need for service.
A quick search on Kijiji there are a few Gravity feed tanks. If that the way you want to go. Then just contact petro or refuel, or whoever will give you the best price to fill.