Swift sport shudder trouble

[mongo5165]

Hey Swifties! My 2012 Sport CVT (had it since day 1) has developed a shudder when slowing down to 30km/h and then accelerating (like turning corners). Feels like it's the tranny, and it only happens when it's warmed up. Fluids are all good, dealer did ECU/TCS updates (helped a bit), but the shudder’s still hanging around. Heard fluid changes/clutch work might fix similar CVT issues. Anyone else had this? Any tips?