It's your choice. I modded my Ultra Stick 40 from the 1" hole as supplied, plugged it and drilled two holes the same diameter as the fuel line OD. I doped the holes for fuel proofing, which also closes the holes slightly and makes a tight fit, so less chance for fuel getting past. <div>
</div><div>I also made a balsa 'bumper' glued into the tank compartment which prevents the tank from moving forward during a hard landing (what my pals call a 'crash'), this prevents the tubing from contacting the firewall and pinching or cutting a fuel line. </div>