Hi everyone. I just got a 1988 20' calkins trailer from a friend and i was wondering if anyone knew about the tilting mechanism on it. all the rollers are on like a rack and the whole rack swivels. i have not seen a trailer like this before and was wondering how they are. it seems the weight is all on 4 bolts on each rack. the trailer seems very heavy duty.the rest of the mfg tag is unreadable. i want to put my 1976 mako on it.I cant talk to my friend cause hes in the service. thanks for any info.