99 Civic, AC compressor locked up the oil in it is metallic and dark. I have removed the compressor and need to remove the expansion valve (need to flush the AC lines and components). The valve is in the the evaporator core box, the outer box needs to be removed for cleaning the core and access the expansion valve. Question: how do you get the dam clips off the back side of the box, getting them back on will be a bigger problem, there must be an easier way.