I have a wood grain Waterman 52 1/2V, with a #2 heart nib; A black Waterman 52V, A Canadian 351-V waterman FP, and 2 Mabie Todd Swan antique FP's. I bought all of them off eBay, and paid no more than $25 for any of them. The nibs are in great shape, but they seem to be missing their ink sac. They are the "self filling" kind where you push the lever down once it's in ink, and they are supposed to pop up once the sac is full. The only way I can use them has been by dipping them into ink, and writing with whatever ink collects in the nib. I'm in Indiana, and am searching for someplace to have them repaired, but even the Jewelers here in Kokomo say they quit repairing "those things years ago." If the repairs are expensive, could someone please direct me to some place where I could buy the sac and attempt the process myself? These were all eBay finds, and I'm still happy with them but do not want to put 200 dollars in to each pen to have someone else repair them. Any help is greatly appreciated. Thank you in advance, Josh