Posted for "Bill Edwards" <wpedwards@hilgardhouse.com>:

 My IVP 550 starts surging at 11-12k feet and one surge is enough to remind
 me.  On landing, after a flight of several hours, the engine will die at
 idle power on roll-out unless I leave the low boost pump on all the way to
 the hanger.  On the other hand, the engine continues to run at very low rpm
 even though the mixture is at idle cutoff until I switch off the boost pump.
 Is this a quirk, or common?