Pedzisa mashoko anotevera: Muna 1975, hurumende yechiCommunist muCzechoslovakia yakabvisa mvumo yaDuka yokushumira somupristi. Kubvira ipapo kusvikira
hurumende yakadonha muna 1989, Duka akashanda semugadziri paSkoda fekitori muPlzeň. Munguva iyi, akashanda muchivande muOrder uye akasarudzwa kuva Vicar Provincial wedunhu uye akashanda kubva muna 1975 kusvika muna 1987. Kubva muna 1976 kusvika muna 1981, akadzidzisa dzidziso dzechitendero kuvadzidzi vechikoro chechitendero cheLitoměřice. Muna 1979, akawana dhigirii reLicentiate muTheology paTheological Faculty of St. John the Baptist muWarsaw, Poland.