U/C plate now fits flush with bottom of Fuselage.... made some triangular liteply formers and fitted twixt plate and F1, and added some triangle stock for good measure!!

Gonna fuelproof the firebox before fitting it, but not bother with tank bay and hope for the best!!

Looks like clearcoat and 'profilm over the holes' on the outside of F1 and firebox will stop fuel ingress....

Regards,

Steve