The HL turret is much smaller at the barbette than the Tamiya that Nick made his casting for, so the hole for the turret was huge. I coated the turret ring with lots mold relase along with the rotation gear and used bondo and built a barbette ring for the turret to rotate in. The turret rotates pretty well but is a tad sticky still in one spot so some more trim fitting or sanding is needed to get a nice clean guiding rotation. I have shim stock and plexiglass filled in the cavity of the under side of the engine vent where the rotation motor will mount, I have already test fit it there just need to drill screw holes.
The process of building up the bondo barbette was first I used just the turret and filled around it with bondo, then trimmed it for a good fit and smooth rotation. Then I screwed the gear onto the turret and pushed bondo between the new bondo barbette ring and the gear ring and built it up sold. Then removed the gear and trimmed down where it cast into the teeth.
