installed a new 1.6 Wellworth elongated K3978 and it doesn't flush worth a squat. Holding the trip lever down helps alot, but a "standard" push of the lever will barely clear the bowl. Tried moving the chain to the lower pick up point (raises the canister higher upon flushing) but had little effect. The "flap" just closes way to fast. I don't want to tear out a brand new toilet if I can help it!