Glue on the sidewalls is ugly but should not be a issue for use. Leave
it alone. You can pick it off by hand to some degree. If you use a
solvent, it is likely to attack the sidewall as well as the glue.

When you apply the last coat of glue to the rim, you should mount the
tire during the "green time." This is when the glue will allow
movement and alignment for truing up the tire. If the rim glue is
almost dry, it can be very difficult to adjust the tire after mounting.


If you are struggling, try to begin with more tension when mounting. In
other words, pull the tire tight as you lay it on the rim, right from
the beginning at the valve. Pull on both sides with as much force as
you can muster. Tires are made a bit smaller then the rim, so it can
be tough to get some on. If there is any kind of pressure in the tire,
let it out. However, a completely flat tire can get messy, and you are
back to problem #1 in your note. Leave only enough air in the tire to
have it keep it round.