SolidWorks Surface Sketch Fix

I have a surface-based SolidWorks model whose sketches refuse to behave—relations keep flipping and dimensions won’t lock the way they should. I need someone who knows the ins and outs of sketch constraints... (Budget: $2 - $8 USD, Jobs: 3D CAD, 3D Design, 3D Drafting, 3D Modelling, 3D Rendering, CAD/CAM, Mechanical Engineering, Solidworks)