I installed new padding, trimmed it, then stretched the material over it then fastened through the top material and padding. I then trimmed the top material. Hopefully the attached pictures will help.
As far as the drip rail goes, I do have it but it is in 2 pieces an is not very straight. I’ve tried to straighten it as much as I can but it’s still crooked. I would prefer to install a new one and would like suggestions as to where to get it.