I have a 2019 Lyrik RC 170mm B1 Debonair 51mm offset with an HC97. I have complicated feelings about it tbh, I've gone through a lot of different configurations with it and I can't say I've ever been fully satisfied with the performance, but I don't think that the HC97 is necessarily the problem. My setup is as follows:
~190lb with gear
2019 Kona Process XL w/ -2° Angleset, Cascade Link, Super Deluxe MegNeg w/ Tractive Tune
Static Geo: HA: 63.99°, FC: 857mm, RC: 424mm
Spring: 170mm B1 Debonair, 97.5-99.5 psi (depending on terrain), ~0.5 spacer (cut in half, so difficult to know the exact volume)
Damper (all counted from fully closed CW): Oil: Motorex Racing Fork Oil 2.5W, LSC: -22, HSC: -15, LSR: -9, HSR: RP3 shimstack (My damper is a Charger 2, not a 2.1)
I have questions about your setup, but I think that if your only issue with your Lyrik is that you'd like more compression damping range, the HC97 will probably give you that. Whether that solves your problem is a different question imo.
Honestly it does sounds like you just didn't have enough air in the fork for the change in travel, but if you (or anyone else) is interested in getting into details:
- what settings are you running/what's your weight with gear?
- What kind of shock pump are you using? Tuning a modern fork (or air shock) absolutely requires a digital pump, they look like they're from the same factory, so buy the cheapest one you can find
Can you confirm whether you have a Charger 2 (black damper sealhead) or Charger 2.1 (red damper sealhead) damper, they (apparently) made changes to the LSC circuit in the C2.1 which allowed it to actually close (you can check using your serial number on the Rockshox Trailhead webpage, also provides you with their recommended air pressure (for B1 is too soft, for C1 may be closer to correct) and rebound damping, but is setup for whatever length spring your serial number had originally, so you may have to input your model manually)
Has anyone actually had Fluid Function retune the compression side of a Charger 2/2.1 damper, especially the RC2? It doesn't seem like it lends itself well to tuning, what with the big preload spring on the HSC shimstack, and making changes to the LSC would require custom parts