Jan K;

I agree with you. But. Making a new cowl on a CAP with the engine say 2-3 cm lower would 1) be too difficult for me and 2) look incredibly silly.

The PT-20 leans out quite a bit from full to empty tank, but I don't want to mount the engine lower because of prop/ground clearance. We have a grass runway, and I run 10 and 11" diameter props.

I admit it; I am lazy. Instead of making the necessary modifications, I'm going to buy a pump. It will be like sneaking in the back door, but if the result is the same, I'd rather pay £35 than move the engine.