I had a close call just now, decided to solder up the air hole on the RM2. And then re drill it to 1.2mm. As per Rob from reosmods suggestion.
But being the dumbass I am, I used the blowtorch to heat up the rm2, while placing the solder, and a huge lump dropped through to the threads on the opposite side. At first I wasn't concerned. Thinking that I could just reheat it and mop it up. Long story short. This lead free solder is a ***** to work with once it gets on brass. Cleaning the threads up enough to allow it to screw on was a pain in the ass. But in the end I was able to fill the hole using the soldering iron and redrill to 1.2.
This is just a headsup for anyone attempting the same thing in future. Put a backing behind the hole before the soldering begins.
But being the dumbass I am, I used the blowtorch to heat up the rm2, while placing the solder, and a huge lump dropped through to the threads on the opposite side. At first I wasn't concerned. Thinking that I could just reheat it and mop it up. Long story short. This lead free solder is a ***** to work with once it gets on brass. Cleaning the threads up enough to allow it to screw on was a pain in the ass. But in the end I was able to fill the hole using the soldering iron and redrill to 1.2.
This is just a headsup for anyone attempting the same thing in future. Put a backing behind the hole before the soldering begins.