So far so good with spring mod on my 510 and 901.
The pen spring I'm using does not fully insert into the 510 cartridge. Would I get better results if I searched for and used a thinner pen spring that does fully inserted into the cartridge?
Notice how I have carefully avoided use of the word "hole"
Dave
The pen spring I'm using does not fully insert into the 510 cartridge. Would I get better results if I searched for and used a thinner pen spring that does fully inserted into the cartridge?
Notice how I have carefully avoided use of the word "hole"
Dave
