Looking fir help Martin industry vetrans - roboscan lens refurb


im looking for help from martin fans, whilst not controller related im hoping some one can make some recommendations, i picked up 30 roboscan fisxtures for a steal and have been refurbishing them i am looking for advice on how to re-seat lenses with out getting adhesive everywhere and ensure lenses are 100 seated correctly , attachedc are images that show the challenge

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Any advise on jig design or methodology greatly appreciated.