Recently I "repaired" my emergency parking brake handle so that is holds up in position......

Now...the rear brakes drag when I installed it - so it needs lengthening in its adjustment.

**What makes the shoes return to their off position and thus away from the drum(s) - is that simply the job of the rear brake shoe "return springs"......

Anyone have a rule of thumb for adjusting said emergency brake cables?

Thanks

Larry 
Ga.