Through the course of several tours, the production tinkered with what worked. The fundamental principle that IHRA is so flawed it should be abandoned, not tinkered with. He began to lose confidence in his game and tinkered with his swing often. He may have also tinkered with sketches in his early years in the United States. Napier seemed complacent and tinkered with the design for better performance. He also tinkered with, and roared about upon, his motorcycle. Robert Strutt tinkered with Rutherford's helium method until 1910 and then ceased. As Duncan tinkered with materials and techniques, his bag of tricks grew and grew. Both Winder and Secretary of State James Monroe later tinkered with Stansbury's dispositions. As a boy he tinkered with Brownies and other cameras. He tinkered with a urethral catheter and a balloon in his attic. Burne-Jones tinkered with the portrait for years, and it remained unfinished at his death. In February 1692, strange illnesses appeared after the girls tinkered with fortune-telling. Growing up, the two sang together at karaoke bars and tinkered with recording equipments. Poor preview response delayed the release for two years while the film was tinkered with.