Just one question. I know you've probably have already said but what do you stick your underlay and track down with please.
Clearly, someone hasn't been paying attention.
The cork is stuck to the baseboard with a 'cheap' PVA wood glue. Mine was actually a mix of two, one thick and one thin from different sources giving the desired consistency. I could have just thinned down the thick PVA glue (Screwfix no nonsense) with water to achieve the same result.
The track is stuck down using Brianclegg Blue label washable PVA glue. (Boyes) This allows me to lift the track by soaking with water for several hours should the need arise and it has done so on several occasions already. Similar products are available from craft shops.