Fixing Splode's Rikou

[BeastwithFriends]

I need help editing an old Splode character. I want to adjust the X scale to .83 so that it looks closer to how the real Capcom games look. A problem arises when he uses full screen attacks. He has an attack where a tidal wave rolls through from one side to the other. When I change the X Scale, this attack becomes squished and there's blank spaces on the ends of the wave. Does anyone have any advice on how to change the overall x scale of the character without changing the scale of this attack?