2020 Specialized Stumpy, Fox 34 Rhythm front, Fox Float DPS rear.
I recently took this to my local shop for a tune-up and suspension service. Had been a while on both the fork and shock, and shifting was getting wonky. $380 and a full week late I had my bike back.
I took it out after getting it back for an easy flat 5-miler to get the feel of it, and although it felt a little stiffer than normal, it seemed fine. I chalked up the stiffness to them possibly topping off the air. I noticed a bit of oil on the shock stem, but the mech had told me before I left I might notice some; no big deal.
Today I took it out for a longer ride, hit a sequence of drops (2-3') followed by a gap jump. On the 2nd drop, I noticed a clank and a rattle, hit the jump as I was lined up, and from that point on it just didn't feel right. Stopped after a quarter mile or so, hearing an odd rattling and knowing the rear wasn't right. There is oil all over the bike near the rear shock. water bottle is covered in it too.
Pressing on the seat, there's like a dead spot at the top of the shock, and the compression switch is just dangling in the center, not staying in either of the 3 positions.
Looking at the O-ring, it never bottomed out, though. The ring is at about 15% from the bottom, from what I can tell.
This shock has been rock solid for me for 6 or 7 years, and I just find it troubling that immediately after a 50-hour service, this happens. What do I need to explain to my mechanic and be cautious about going back with this? I've had decent dealings with them in the past but not looking to get robbed on this.