I can empathize with what happened...next time if you have the time do it yourself
you have more than enough talent to do it. For the rod brush you can use a gun cleaning
rod with the proper caliber trimmed down to fit the rods. I know you can probably out solder
most of us here...I personally like a high silver content solder rod for patching. soldering
tank seems (non bolted tanks) pre tin the flats and walk it around adding with the rod.
If the rods are too small for a barrel brush rod get some coarse copper scrubbies break off a bit
and use a steel welding rod to push through (bulb the end with a torch). (make sure you clean each tube well before
When soldering the rods have a very small tip and don't flash the fins.BTDT not good.
Some use electric pencil tips and higher lead contents.......Oh well
As a side note the old school baths aren't used (so I've been told) epa probably
can't even use caustic soda anymore