Nyorai kuenderera mberi kweiyi ndima - Jansen akahwina wekutanga wevatatu vake vanotevedzana maDutch mazita emunyika mumwaka wa1977-78. Anokwikwidza paMakwikwi eISU mashanu, akapedza 17th pa1978 Europeans muStrasbourg, France; 18th pa1978 Worlds muOttawa, Ontario, Canada; 20th pa1979 Europeans muZagreb, Yugoslavia; 23rd pa1979 Worlds
muVienna, Austria; uye wechi18 pa 1980 Europeans muGothenburg, Sweden.