How do you get the snaptape and the crotch to line up correctly? It seemed that the back was a big longer than the front... I hemmed the shorts up 1/2 in and then 1 full inch like it said leaving just the rise to finish with the snaptape. It juse seemed like I was trying to fold in a curved line and then it was all kinda bunchy and just not smooth looking? Tips or tricks? Should I cut my pattern longer in the pants? The hems don't really line up straight that way either... since you hem before you attach?