I recently had it filled with r12 freon....it was working fine...then noticed that it was cooling as much anymore. Would hear the compressor cycle on and off but not long enough to cool. I know there is a leak at the schrader valve core. (UV Dye in the system indicated this) The freon is not low however. Can the ac clutch wire become frayed or worn down over time? The compressor is the original from the factory. The thing is that even if i replace the fuse, the compressor cluth will engage and the compressor runs....I can see refrigerant running through the sight glass, but it barely gets cold now. 2 problems obviously. What do you think?