[wkooiman]

There are 2 progressive linkages - LR and MR.

The LR linkage opens slower, and has a single flat arm on the driver's side pointing down.

The MR linkage has a curved arm pointing down, and a curved arm pointing up - for the spring.

The MR linkage opens faster, so you have to be more careful with the go-pedal.

If you have the MR linkage, switch to the LR linkage.