Wilier downtube cover/plate

(fyi Thingiverse I guess resizes vertical pictures so the installed pic is stretched. oops...)

Because Wilier is a money hungry company, now you can shove this in their face and save $60

Printed best with a raft because it increases bed contact. Brims might help, but for small parts with little bed contact rafts work best. It's a thin cover so supports snap off clean. Do not over tighten the part and print it solid.