Brett
You have just experienced the good life. Why
HD cannot seem to spend more than ten cents on suspension components I'll never know.
I have the progressive fork springs in my Nightster (07) coupled with 7.5 weight fork oil. I'm a bit heaver than you and I NEVER bottom the forks any more.
I too put progressive on the rear, and now have a bike than can handle like it should have from the factory.
Ride safe.
Jake