Head skim requirement?

[MA70-3.0GT]

Not uncommon to find loose bolts? Why would this be, especially after (rough estimate) 3 or 4 hours running time, if that. And would re-torquing after say 250 miles be worthwhile?

Anyway I took some pics the other night, some aren't as good as they looked on the camera but as the computer's at my folk's house I ain't going all the way home to get more!!!

First one you can just about see where the gasket's blown, although if you remember I said that bits of what looked like gasket material appeared in the top of the rad, it was & was from between the coolant passages & fire-rings on all but number 5!!!

Second to last is well out of focus but you can see the fresh hone-marks on the previously rebuilt lump & the ones either side are just to show what a sexy re-con head looks like, even if it didn't last five minutes! Head measurement by the way shows about 10 thou removed. Would this be reason enough to need a thicker metal gasket? Hope not or it's going on Ebay!!!

EDIT-: and yes, before anyone asks that workbench IS the bathroom door thrown over the top of the tub!!!