Audison SRx 4

Hello,
I'm trying to remove the pcb from the housing of Audison SRx 4. The top cover (silver) holds the clamps of the transitors, but is very tight fitted to the blue part.. Is there a normal way to remove this..??? ..don't want to use brute force.
 

Attachments

  • SRx 41.jpg
    SRx 41.jpg
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  • SRx 42.jpg
    SRx 42.jpg
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  • SRx 43.jpg
    SRx 43.jpg
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  • SRx 44.jpg
    SRx 44.jpg
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