Length of the bushing isn't important, but you can enter the diameters in the search field
Just enter
.44 .38
In the search field. If the app has any kits with those dimensions, they will be listed.
If those don't work, try adjusting one or the other by .01 at a time in case your measurements were off slightly.
It's possible that your bushings might not be in the app database yet. We are working on an update to the database & hope to have it ready soon.