I am building a Super Sportster 90/120 from a kit I purchased 10 years ago. I am finishing up on the wings and I need to epoxy the dihedral braces and wings together. The instructions say that 30-minute epoxy is necessary. I have 20-minute epoxy but do see there is 30-minute epoxy available. Is it acceptable for me to use 20-minute or do I have to buy some 30-minute epoxy for this task?

Thank you for your assistance!