I have another question: I have a copy of plan where it is written CLP and about 16 cm (6 ") in front of CB or CR(it's just on the fold of the old plane), I would like to know if one of these dimensions is the center of gravity to position the axle of the trailer. I felt that the center of gravity was further ahead when i careen, perhaps because the inboard engine of 200 kg was removed .