So I had used the bigger exhaust mounts as I had read that they held up better. They definitely didn't allow it to move much. I think the strain was too much and the rear tab broke. I didn't really notice because I have velcroed the tank to the battery box. This is industrial velcro, not the stuff on your shoes. It's VERY strong and tenacious. I also didn't use a bottom mount at all, it just hung from the bigger upper mounts and the velcro. There's no sign of the bottom of the tank hitting anything. Options: Get the tab welded back on. Use the smaller oil tank rubber mounts. Use a thick silicone pad under the tank. Just use the front rubber mount and velcro. I actually hold the battery (smaller form factor) in with velcro. It does not move at all. Apparently the velcro from the oil tank does not transfer the heat from the oil tank to the battery box to the battery. At least if it did I'd expect cooked batteries. So far I think I've only used one battery in however long, 7-8 years?