Just A quick DIY for those with larger PAs than the 5000 offers Mine currently is 00 gage so a quick trip to the HARD-ware store and bought one foot of clear vinyl tubing, 5/16 OD 3/16 ID (fit Perfect) 5/16= about 0 gage so unless I find a fatter OD tubing with the same ID that is still urethra friendly, 0 gage thats about good for now Cut a 3 or so piece I used a very fine wet dry sand paper to give the cut end a nice smooth finish before pushing it on, Youll have to warm it up in a pan of HOT water and leave it wet so the water will help you work it all the way up the 5000s ring. Trim the excess off the tip off the vinyl tubing Hope that helps some one get a better fit and fills that hole SPA III