A friend of mine suggested Beacon 3-in-1; it turns out that it has many of the desirable characteristics of URCFG.
Press the two parts together lightly, then pull them apart two to three times - until you can feel the adhesive resist being pulled apart. You may need to blow gently on the glue a bit to help things along.
Now, press the parts firmly together; you can make small adjustments for some time after.