A friend of mine has asked me if a few pens can be fixed. The first one is a Parker Vacumatic with a lockdown filler. It has a Canadian imprint. I had a look around and think it's a Standard Lockdown with a jewellers band on the cap, but it's not 14mm wide at it's widest point on the barrel, it's more like 12mm wide. Please can anyone identify the correct model and tell me what size vac tool I would need for the filler? Regular or Maxima? Also, does the lockdown filler have to be unlocked and in the out position before I start? When I flushed it with water it took in a little water and I was able to flush it, but it doesn't fill properly. I only get a few drops of water going into the barrel. The other thing is that it has flushed lot's of ink out but it's now soaking what looks like rusty water into a wad of kitchen towel. Will that mean it might need a new breather tube? If it's going to be too complicated I will give it back to her and say she needs to get it fixed by an expert. The main thing that concerns me is getting the old pellet out of the cup. I think I could manage the rest of the sac replacement. The only previous one I did was an ordinary 51 vac, and bought a complete new pump assembly. It's also missing a jewel on the filler cap. Should this be a jewel with some sort of a gold plated surround or just a black screw in jewel? Is it possible to find those as spares like Parker 51 jewels or is this version completely different? Pics: