For tubes i still find that simple PVA works best, wheat paste and dextrine might set a bit harder but after a while they go soft on you, i have here on my desk a tube I rolled a month ago, when I rolled it, it was hard as rock, today it's soft. I used dextrin glue which is hygroscopic. PVA is not hygroscopic and sets hard. Ain't to pricey also, 2€ for a 1 liter bucket, and it goes a LONG way.