That Sinbad looks in pretty good nick already.
Good thought with the laminating of reference cards. I just tidied up my transformer board recently and thought they looked pretty fragile, I might have to pick them off again and do the same.
Can I ask the reason for replacing the EMI filter regardless? I replaced all the fuse holders on mine since they just looked dodgy after so long, but can the filters fail/become unreliable over time too?