I use poly-tac fabric glue thinned 2/3 acetone,1/3 poly-tac.brush on,let sit for a day,sand smooth with 220 grit.Blow off any dust,then cover at 270 degrees.A little overkill,but works great.Nothing is more annoying than when the fabric starts lifting.Don't be afraid to sand the edges lightly before putting the mating piece over it.jeffo