Spare part for Penn Affinity 7000 LTD?

Hi all, haven't been fishing for a month and a bit and I'm finally getting out tonight, upon grabbing my reel to give it a polish and a test i found that the screw cap that goes in on the opposite side of the handle is missing. I've searched all over the house for it with no results. Here's where it goes into:



Where can I buy a replacement for this reel part? Do penn themselves do it or is there an online tackle dealer who does it?
Thanks


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Try Mick Simmons of Penn Servicing,Pershore ,Worcs., 01386552949.

Thanks, I've emailed him, any other options out there?