Revelations of how DUMB your humble narrator is is indicated by the fact that the wheel studs were screwed into the hub (?) We found out after we had drilled and cussed this part out the hard way ....DUH!!!! Old U bolts were quickly removed using a cut off wheel on a grinder ... tried a Portaband , but wouldn't fit ...Those lock nuts sure were tight .... I think I'd have preferred a lock washer and something that went on a little easier ...
Also . Premature failure of the luan surfaces indicate how badly I was screwed by the Home Depot ( which I will try to avoid from now on ).. cracking with the top grain , about every 16"... all across the roof (where it was bent ) Bends were not that sharp at all , leading me to the conclusion that they sold me C**P... I didn't know they had mahogany in CHINA....Possible that since the ply was applied cross grain on the roof , cracking was enabled .... has to be the gaps in the ply ...
I guess the fix will be a good sanding and some HEAVY DUTY roof type paint , or just glass the whole roof , paint and then be done with it ...this things too wide for aluminum , unless it was "seamed"...
Moral : Beware Box stores dealing in inferior merchandise... I know you guys have said it before , but it just bit me in the.......
Gosh , I sure have learned alot by building a TD ... FUN and educational ...
Not worried by the minor setbacks , just the Cosmic 10% denying force...

Ouspensky