I've tried all the Perry products and never could get ANY of their pumps to work. Tried following the directions. Tried modifying the install. No luck. Tried different engines in different planes. Tried different tank heights and different tank plumbing. Tried different fuels and plugs. Tried all kinds of tricks. No joy.

Yes, the Cline costs $60. But to me, it's worth it. Install it. Tune the engine. Go fly. Thats worth $60 right there. I'm already loosing my hair--I don't need to pull anymore of it out fiddling with a pump that doesn't work.