I’ve got 73K on my ’03 Std and my front forks are getting a little “squishy”

They dive easier and don’t rebound like they used to. No leaking oil, they just seem softer than they were 7 yrs ago when she was new. I haven't done a single thing to the front forks in those 7 years. Sometime when the snow’s flying, I’m going to replace the OEM front fork springs with some Progressive and see how they do. Since I plan on disassembling, I’ll also replace the seals, oil, etc. A friend who owns a machine shop made me a tool for the LH inner fork bolt, so I’m set as far as tools go.
Here’s my question:
The manual talks about inspecting the backup ring, guide bushing & slider bushing and replacing if signs of wear (scoring, scratching, worn teflon, distortion, ...). Did any of you notice signs of wear and have to replace? Wondering if I should count on replacing these also and have on hand or assume they will be nice & perty for me.

Thanks in advance for any input and insight!