Hi, i wanted to know how much does the elasticity of the waist knit play in the snuggness of the waist? There does not seem to be much of a tapper in towards the bottom of my jacket anymore and seams a little loose around the waist.I know the knit has shrunk up some as far as width and no longer has any stretch left ( from previous HWT) When I replace the knit will it help with the bottom of the jacket fitting snugger around the waist?