robbyunstoppable

Hi guys, I recently dug out my old Trace Elliot GP7SM combo out of storage to start playing again but over the years it has lost all its input jacks screws. I went onto eBay and bought a Marshall input (pictured below) hoping that it would fit but unfortunately it doesn't... very similar but not quite right! Does any one know what jack I should be buying for these type of inputs!? and any names of suppliers/websites i can get them from?? Many thanks!