I recently received an OAT probe purchased from Aircraft Spruce & Specialty part no. 10-01823. I have installed it to my Dynon EFIS D100 purchased from Dynon Avionics in December 2008. Have selected type 2 on Dynon. Am not able to decrease temperature sufficiently in setup to calibrate OAT probe to ambient temperature. The TAS appears to be correct whilst flying but temperature and altitude are out. Is there an OAT problem or am I not calibrating correctly??