It seems like a basic question, but I haven't laid track (N gauge) in a number of years, and haven't done so before on Woodland's foam roadbed. Virtually all of the trackwork is tangent, with a great many switches in this first module. All soldering to track joints has been done as well as track feeds, and switch machines are in place and tested, so I had in mind something to adhere by capillary to the underside of the ties, and would lay very flat for ballasting later. I just haven't been reading the mags and how-to's recently, and Woodland's suggested tacky glue doesn't seem to best fit my needs. So I thank you in advance for suggested products.