I've got a similar issue and it drives me nuts.

Slow down without gaining altitude and it mushes into the spin, try to pop the nose up by jerking in the last bit of elevator at a slightly higher airspeed and one wing drops while the other lifts "looking" like a snap entry when it's not. Blipping the throttle just prior to the mushy stall doesn't work. More up elevator throw doesn't work and moving the CG backwards and forwards doesn't help either and it creates problems elsewhere. It doesn't appear to be the same wing stalling first each time either

I've seen other planes perform the beautiful slow down, lift the nose a fraction prior to the stall, then the perfect wings level nose drop before rotating into the spin and it makes me sick.