The Titan is not too hard to rebuild and it can be done with no special tools however it is a real pain in the rear to assemble the HP assembly with out a HP assembly tool. If you want one, drop me a PM and we can talk about them. Another item you really need is a pair of clip ring pliers. Get a good set, the cheap ones just don't do a good job. Other than those 2 items the rest of the hand tools are common. You will also need an IP gauge and it helps to have a magnehelic or manometer to adjust the second stage. The biggest problem you are going to have is getting kits, AL is pretty good about keeping them off the market but they can be had if you work at it.
An inexpensive way to decide if you really want to give this a try is to buy an old Conshelf first stage either locally or off ebay, the model does not matter. They sometimes go for less than $20 and internally the first stages are exactly alike, with one exception, the Titan has a removable HP volcano orafice, the Conshelf's is machined into the body. They use the exact same rebuild kit and the intenal parts (other than the orfice and maybe the pin- not sure about that one) are interchangeable. You can take the ebay one apart, clean, lube and assemble it until you are confident you can do the job....and if you put a kit in it, you will have a prefectly good back up reg to boot....after all, the Titan just a Conshelf with a modern outter skin.
