G29--38 is one of the most-studied of all DAVs, but still some mysteries remain. Despite having pulsation frequencies which can change from season to season, there are several pulsations which have remained stable in frequency over long periods of time. The most stable of these is present in all our data from 1975 to the present. Using data over an approximate 6 year time-span, Kleinman et al (1994) measured a preliminary rate of period change for this mode of $\approx -10^{-12}s/s$ whereas secular cooling models predict a period change on the order of $+10^{-15}s/s$. With the extensive observations the WET can provide on this target, we should be able to test this value and clearly confirm or deny it. It is also possible that the initial rate of change was due to a long-period companion to G29--38. New observations, separated by approximately 8 years from the previous result, will help answer this question as well.
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