Record Cleaning Mystery


I have the Pro-Ject Record Cleaning Machine and something odd and irritating is happening lately. Every record recently cleaned has deposited a fuzz ball on my stylus. While listening the sound will degrade, I go look and sure enough a ball of fuzz. The machine seems to work good, the records look great and do sound clean but half way through the record the fuzz mucks up the stylus. Does anyone who might own this cleaner experience this as well? I trade off between Mobile Fidelity cleaning fluids and the one supplied by Pro-Ject. I also use the supplied brush.  Thanks in advance.
zar
MAterial is a light gray. Looks like dust. Happens on side one. I do clean stylus prior.
Do you have central air conditioning? If so, does the register blow on your turn table? May be the source of the dust. Even if the vent isn't blowing dust, it could be blowing air on your record causing static electricity which attracts dust. A ceiling fan can have the same effect. 
Make sure the vacuum path has no blockage or leaks.  Check the wand and be sure it is clean and check the wand holder to be sure nothing is lodged in it. Not sure how many revolutions you use before stopping the vacuum, but I would recommend a minimum of 4-5. I know the instructions say 1-2, but I find that’s not enough time to suck out all the gunk.
Do you hear anything different from your cartridge?  If I were you I'd make sure your stylus isn't damaged before proceeding. I know this from painful experience. Once by sheer coincidence my stylus got damaged just after I bought a new record cleaning machine. Took me a while to realize that the filaments on my stylus were actually shreds of vinyl (and had nothing to do with the cleaning process). That was fun! I hope you don't have that problem but it's worth taking a look. (if I rubbed the filaments they turned into dust). 
If only on one side, I think you may be picking up dust or dirt somewhere during your cleaning process.  If you clean side one first and then side 2 and the fuzz only appears when you plan side one, I think you may be "contaminating" the clean side somehow when you flip it over to clean the other side.