I didn't feel like working on the wings today so I got all the steel parts together to paint and install, then I drilled holes in firewall for nose gear mount and eng mount. I mounted a deburring bit in my angle drill and was able to get into the weldments for deburring. Mocked up the eng mount and discovered a problem. The mount was interfering with the gear mount. Called jabiru and they said I need to fab up some .25 inch spacers. I used some washers until I fab the spacers.