Engine stalls when I de-clutch

["Slack Alice" Simon]

It shouldn't move forwards or back, any movement implies something wrong with the main bearings or their housings, or a loose flywheel.

I suggested it because it is an easy check to do.

Read up about clutches, there are other things to do besides bending levers.  Eg. replacing levers and/or pivots.

If appropriate, a standard bodge is packing the cover plate away from the flywheel with washers, which works for a while.