I agree with AS on the issue of the bolts through square tubing. If I go ahead and buy a replacement tongue, I will also install compression sleeves where appropriate. I am kind of surprised Al-KO doesn't use this feature, but the tubing is fairly thick, so it is possible that their engineers think it is unnecessary. I am the sort of guy who doesn't use a 10 mm bolt if a 12 mm is available and will fit.