I had a coolant leak on right side.  Person said head gasket and replaced.
About 500 miles later, it leaked again in same place.  2nd person looked and
said it was overtorqued so bolt doesn't fit into threads well.  He said he
could do a temporary fix with sealant.   He did and it worked until now
where it is leaking again.

I don't know if it really needed a head gasket since this appears to  leak
in same place as before gasket got replaced.  Is there a fix for this over
torgued bolt without having to buy a new block?