Speargun Reel Handle Size Redesign

I already have a complete spearfishing reel model that was delivered in a previous project; the only thing missing for perfect usability is the handle’s proportions. I need that single element resized... (Budget: $19 - $20 AUD, Jobs: 3D CAD, 3D Design, 3D Modelling, 3D Printing, CAD/CAM, Fusion 360, Product Design, Solidworks)