Yep, the stuff sux donkey bols.
FWIW..Pliars, acetalyne, a lighter, and some solid silver solder and acid flux are a farmers (*and wheelers) best friends.
I've fixed a cracked top cap by draining things into a fast food cup, torched off the paint and prepped/filled with the acid and flux, as well as just pinching off tubes to get home. Always cheaper to buy a new radiator worst case than a rebuild.
Look at it like this, you can build a better engine now.
