maybe the end of those damn airlocks.

No pump trouble on van mount for ages. Hope I aint tempted fate by stating that. Thing is, it would go couple weeks, then, airlock, a right hassle. Pump struggling away but nothing. My brother suggested putting the shurflo sideways. Never thought of it, though they do state it can go in any position in their details. And its been great, no probs. Anyone out there who keeps getting this problem (well, airlock I presume, cant speak for other troubles) try it out. I think its to do with the  strainer causing airlocks, but either way, very chuffed with it.?