Bump, finally getting around to gluing my first set of tubulars, this weekend! I have an old set of GP4 rims, well loved and used, the rear I just pulled the old tubular off of as I didn't trust it's condition, and I have a new set of Vittorias here.
Now for the question: how dry is too dry to let old glue remain in the rim without stripping it down? The rear wheel hasn't had a tire on it in a while, but the glue is still tacky to the touch. Enough to make the carpet or a towel stick to it if left for any length of time. Front wheel is much the same, had to use a reasonable amount of force to pull the old tire off. Should just a light coat of new glue on the rim be sufficient?