I think Chris is talking about me. I put a tandem trailer together with MH axles/tires even though I was leary of them and their legality is questionable and pinch rims are a hassle. They were cheap and that was attractive. I hauled the load limit that I had planned and all was fine - no problems. Then I noticed one of the drums had a crack and then I gave in to all my misgivings about MH axles/drums. Found a set of 5200# AL-KO axles on craigslist and bought them plus leaf springs, etc., and now am about to buy tires/wheels - lots of $. I'm committed to replacing the MH with the AL-KOs but just haven't done it yet and I am not yet convinced that is the best decision: I could not tell a bit of difference in the MH axles and the AL-KOs by appearance or weight! (I'm wondering if they were even MH axles - but they did come off a mobile home.) Anyway, they will be for sale in the coming months with four new 8 x 14.5 commercial tires and someone will get a fine set axles with almost all new innards and will have only to replace 1 drum for about $50. I think some day I will be glad I did this but I do not see it yet.
Bob