Running an OG rock shox Judy since 1995 on my 19" wicked lite 1993. Replaced the MCU with the kit that came with the fork about 10 years ago. Seems to run like stock but never messed with the oil cartridge which I assume is plastic. Looking at the upgrades on SRP. Steed Springs, metal cartridge etc. I weigh 140lbs wet. Always wanted to upgrade to springs. Any thoughts? seems like it would be under $150usd for everything.