I'd put on a layer of glue onto both the rim and the base tape of the tubular, leave it for 24 hours, repeat, then a final layer onto the rim and fit the tub.
Are you using the tubs on the road or the track? (I'd add a layer or two more if the latter).
There's a very good thread on weightweenies which has all you ever need to know and more on glueing tubulars.
I'd put on a layer of glue onto both the rim and the base tape of the tubular, leave it for 24 hours, repeat, then a final layer onto the rim and fit the tub.
Are you using the tubs on the road or the track? (I'd add a layer or two more if the latter).
There's a very good thread on weightweenies which has all you ever need to know and more on glueing tubulars.