Easy to understand plans, good quality product. The only problem we had was trying to fit polycarbonate panels into beam grooves. We tried washing up liquid, synthetic grease, and ratchet straps, but the panels were nearly impossible to tap in. An engineer we know came to help us, and he managed to push an off cut into the groove, but a full panel had too much bounce. We place one corner end in, and held it in place with mole grips , but it was still difficult. You can fit them easily on the gro