Hi, been into electric ride ons for year, from the PW 12V Barbie Jeep to some bigger overvolted stuff. My daughter has had an MX350 for years. The batteries got ruined when we had the big freeze the past winter. She's gotten a little too big for it, so we're not going to get the new batteries and have been looking at the larger Razors. Came here to get some advice on some very minor mods.