There seems to be as many ways of fixing track as there are modellers. So this is the way I do it. My track is built from basic components - wooden sleepers, brass rivets , all from the EM Society and lengths of rail. I made a track jig some years ago, so the sleepers, are fitted with the rivets and loaded into the jig, one length of rail is soldered on, making half track.
This is then laid 'dry' and it's final position determined by dressmakers pins. Track lifted and the base covered in PVA glue' Track replaced into position and ballasted. Pins removed and rail checked for kinks etc by eye. The ballast holds the half track in position and when all OK put lengths of 3*1 on it weighted down and waite until glue has set when the other rail can be fixed and everything cleaned up. Makes for a very strong track but unfortunately can't be lifted easily.although can be adjusted slightly if kinks do appear.
Sleepers are obtained ready punched with holes to take the rivets.. Making your own track means that you can use the proper length of sleepers. With mine it is for the pre group scene with 9' lengths.
It is a bit soul destroying building plain track but I have a stock of rivets and sleepers etc and do it while watching TV.
Hope you find the method that suits you Jeff
Derek.