I am confused by the build diary and instructions concerning stages 49,50 and 51. Iunnderstand that when constructing the engine compartment that frame 11 is glued to the engine side both right and left but only ond side of the engine front frame is only glues on one side. It appears from the instructions that frames 12,13, and 14 are only glued on one side like the engine frame. the last frame 15 and the previous glued front frame are both glued to the engine side. That means that frames 12,13, and 14 are only glued on one side. When to we glue the non glued side of these frames?

Thank you for your quick response. I have listened to the video of stage 51 3 times more. The word glue is mention ONLY for 15 and the front engine frame. No mention in 51 or 50 or in the instructions of applying glue to BOTH side of frames 12, 13, and 14. I will do that but I assume I glue the open sides of 12,13, and 14 prior to gluing both sides of 15 and finally the engine frame. I must have an older version of the u tube series. Again thanks for your input.