Originally Posted by Defrostyman
I find the best way is to bring the top up to the final step. Then, keep the handle turned and bring it down to the locking position while guiding it with your left hand. The secret is to make sure the handle is already turned on this final step. Try it out and let me know what you think.
I agree with Defrostyman, top will get easier to close with time and technique. The technique that is quoted here is the best way, IMHO.