Built a Thunder Tiger (chinese) Eagle 40 kit. ply for fuselage doublers was so warped I scrapped it and re-cut new parts. Mis-matched weights for many parts - re-cut those, too. replaced the plastic wing tip pieces with balsa blocks. no instructions - just a box of parts and set of plans, which weren't too bad. cheap mounting bolts that twisted in half before they got tight enough to hold the parts in place, and wire LG so soft they spread with the softest landing. Fuel tank leaked - never could get it to seal. Tossed it for a Du-Bro tank. Surprisingly, it flew pretty well.
As a youngster in the 60's, flying CL - anything by Veco was to be avoided. Balsa the same weight as oak that split when you looked at it.